feat(webui): console authorization, RBAC, redaction, and audit model (Closes #633)

Phase 1 of the MCP Control Plane Web Console (#631) defines the model that
future gated writes must pass through, and enables none of them.

The read-only MVP (#426-#436) ships with no authentication; protection comes
from network placement alone (#435). That is adequate while every route is a
GET and inadequate the moment Phase 2 wires a write. This lands the authority
first, so no write can later be added without something to check it against.

webui/console_authz.py
  Identity sources (none / local-dev / access-proxy), a four-role matrix
  (viewer, operator, controller, admin), the privileged-action list, and a
  fail-closed authorize(). Every action maps to a task_key in
  task_capability_map, so the console cannot invent an authority the MCP layer
  does not already define. Roles are always server-side configuration, never a
  client assertion. Deny reasons are closed and enumerated; there is no
  implicit allow branch, and even an allow reports execution_enabled=false
  while ACTIVE_PHASE is 1.

webui/console_redaction.py
  One redaction pass for API payloads, rendered HTML, logs, and audit records.
  Reuses gitea_audit.redact as the shared authority rather than forking it,
  then adds console patterns for keychain references, credential assignments,
  PEM private-key blocks, and JWTs. Never raises: an unredactable value
  degrades to the placeholder rather than being emitted raw.

webui/console_audit.py
  Console-side audit records, which gitea_audit cannot supply: it records MCP
  mutations and carries no console actor, identity source, correlation id, or
  retention class, and an authorization denial is not a mutation at all. The
  two are additive and join on correlation.request_id. Records are redacted at
  build time, re-scanned at write time, and dropped rather than persisted if
  they still trip a detector. Retention is per-record; an unknown action is
  retained as privileged rather than standard.

webui/app.py
  Attaches an authorization block to the existing preview and attempt routes
  and records the decision. The terminal outcome is unchanged - gated_actions
  still fails closed for every action - so this cannot loosen anything. Adds
  GET /api/console/security-model publishing the three policies as JSON.

Probe authentication is deliberately declarative in this slice:
probe_auth_required() reports operator intent and no route consults it. The
documentation says so plainly and a regression test pins the not-enforced
status, so wiring it in Phase 2 is a deliberate change rather than a silent
one. An operator who sets the variable believing it protects a probe would be
worse off than one who knows it does not.

Tests: tests/test_webui_console_authz_audit.py - 75 passed, 93 subtests,
covering each acceptance criterion and each test the issue requires
(redaction units, default-deny for unauthenticated write stubs, audit record
creation for a simulated privileged preview).

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>

docs/webui-authz-audit.md

@@ -0,0 +1,295 @@
+# Web console authorization, RBAC, redaction, and audit model (#633)
+
+**Phase 1. Read-only. This document defines the model that future console
+writes must pass through; it enables none of them.**
+
+The MVP deployment boundary ([`webui-deployment.md`](webui-deployment.md), #435)
+documents internal-only serving and states plainly that MVP authentication is
+*none* — protection comes from network placement. That is adequate while every
+route is a GET, and inadequate the moment a gated write ships. This document
+and the three modules it describes land **before** any write exists, so no
+Phase 2 action can be added without an authority to check it against.
+
+| Concern | Module |
+|---------|--------|
+| Identity, roles, authorization decision | `webui/console_authz.py` |
+| Secret redaction for every surface | `webui/console_redaction.py` |
+| Audit event schema, retention, sink | `webui/console_audit.py` |
+| Machine-readable publication | `GET /api/console/security-model` |
+
+Two invariants hold everywhere and are non-negotiable for every child of #631:
+
+1. **No secrets reach the browser.** Credentials are resolved server-side and
+   redacted before any payload, page, log line, or audit record leaves.
+2. **No ungated mutations.** Authorization is necessary but never sufficient;
+   execution stays disabled until the Phase 2 framework ships.
+
+## Identity sources
+
+The console performs *authorization*. Authentication is delegated, because a
+console that mints its own sessions is a credential store, and this one must
+not be.
+
+| Source | Mode value | Authenticated | Shared host | Phase |
+|--------|-----------|---------------|-------------|-------|
+| None | `none` (default) | No — anonymous, capped at `viewer` | No | 1 |
+| Local dev | `local-dev` / `local_dev` | Yes, **asserted not verified** | No | 1 |
+| Access proxy | `access-proxy` / `access_proxy` | Yes, asserted by trusted proxy | Yes | 2 |
+
+Selected by `WEBUI_AUTH_MODE`. An unrecognised value falls back to `none`
+rather than erroring open.
+
+**Access-proxy mode** reads the subject from the
+`Cf-Access-Authenticated-User-Email` header, set by Cloudflare Access, WARP, or
+an equivalent org portal that terminates authentication in front of the
+console. If the header is absent the request did not traverse the proxy, so the
+principal degrades to anonymous — it is never trusted by default.
+
+The **role is always server-side configuration**, never a client assertion. It
+comes from `WEBUI_ROLE_MAP`, a JSON object of subject → role:
+
+```json
+{"[email protected]": "operator", "[email protected]": "controller"}
+```
+
+An unmapped subject gets `viewer`. Malformed JSON yields an empty map, so
+everyone gets `viewer` — a parse failure loses authority rather than granting
+it.
+
+Full SSO is explicitly a non-goal of this issue.
+
+## Role matrix
+
+Four roles, ordered least to most authority. Each role inherits every lower
+role's actions; the table states the *minimum* rank required.
+
+| Role | Authority |
+|------|-----------|
+| `viewer` | Read every console view. No write, ever, in any phase. |
+| `operator` | Viewer, plus author-class work: claim, comment, open a PR. |
+| `controller` | Operator, plus reviewer/merger-class decisions on a PR. |
+| `admin` | Controller, plus destructive and policy-editing actions. |
+
+`viewer` holds the empty write set by construction, and a test asserts it stays
+empty.
+
+## Privileged actions
+
+Every console action maps to a `task_key` in `task_capability_map.py`, the same
+single source of truth `gitea_resolve_task_capability` and the MCP tool gates
+use. The console therefore cannot invent an authority the MCP layer does not
+already define, and a regression test asserts each mapping matches.
+
+| Action | Minimum role | Class | MCP permission | Confirm | Dual control | Break-glass | Phase |
+|--------|--------------|-------|----------------|---------|--------------|-------------|-------|
+| `claim_issue` | operator | gated_write | `gitea.issue.comment` | Yes | No | No | 2 |
+| `comment_issue` | operator | gated_write | `gitea.issue.comment` | Yes | No | No | 2 |
+| `create_issue` | operator | gated_write | `gitea.issue.create` | Yes | No | No | 2 |
+| `comment_pr` | operator | gated_write | `gitea.pr.comment` | Yes | No | No | 2 |
+| `create_pr` | operator | gated_write | `gitea.pr.create` | Yes | No | No | 2 |
+| `review_pr` | controller | privileged | `gitea.pr.review` | Yes | No | No | 3 |
+| `close_pr` | controller | privileged | `gitea.pr.close` | Yes | No | No | 3 |
+| `merge_pr` | controller | privileged | `gitea.pr.merge` | Yes | **Yes** | **Yes** | 3 |
+| `delete_branch` | admin | destructive | `gitea.branch.delete` | Yes | **Yes** | **Yes** | 3 |
+
+**Dual control** means the acting principal may not be the sole authority: a
+second distinct principal must confirm. **Break-glass** means the action is
+expected to be unavailable in normal operation and its use is retained for two
+years. Both are declared here and enforced by the Phase 2 framework; Phase 1
+records the requirement on every decision so the framework cannot ship without
+honouring it.
+
+`delete_branch` is admin-only rather than controller because it is the one
+irreversible action in the set.
+
+### Authorization decision
+
+`authorize(action_id, principal, for_execution=False)` returns a decision
+record and **denies by default**. The deny reasons are closed and enumerated:
+
+| Reason code | Meaning |
+|-------------|---------|
+| `unknown_action` | No such console action is registered. |
+| `unauthenticated` | The principal is anonymous. |
+| `unknown_role` | The role is not in the matrix. |
+| `insufficient_role` | The role ranks below the action's minimum. |
+| `phase_not_active` | Execution requested for an action whose phase is not open. |
+| `allowed_preview_only` | Authorized — preview only, execution still disabled. |
+
+There is no implicit allow branch. Even the allow result reports
+`execution_enabled: false` while the console is in Phase 1, so no caller can
+read an allow as permission to mutate.
+
+## Secret redaction
+
+One pass applies to **API payloads, rendered HTML, server logs, and audit
+records** — the four surfaces where a credential could escape.
+
+Redaction reuses `gitea_audit.redact` rather than forking it: that remains the
+authority for secret-looking dict keys, `Authorization` material, and raw URLs.
+The console layer then applies its own patterns:
+
+Each rule below matches an *assignment form*: the named key, followed by `=` or
+`:`, followed by the value. The keys are listed bare rather than spelled out as
+complete assignments, because this document is itself scanned by
+`scan_for_secrets` — writing the examples in full assignment form would make the
+documentation trip the very detectors it documents.
+
+| Rule | Catches (as an assignment) |
+|------|----------------------------|
+| `credential_assignment` | `token`, `password`, `passwd`, `secret`, `api_key`, `access_key`, `client_secret`, `private_key` |
+| `credential_env_assignment` | `GITEA_TOKEN`, `GITEA_PASS`, `GITEA_PASSWORD` and suffixed variants |
+| `keychain_reference` | `keychain:` entry references |
+| `keychain_command` | macOS `security` keychain lookups (`find-generic-password`, `find-internet-password`) |
+| `private_key_block` | PEM `BEGIN ... PRIVATE KEY` blocks |
+| `json_web_token` | Three-segment `eyJ...` JWTs |
+| `bearer_credential` | `Bearer` / `Basic` credentials |
+
+Assignments keep the key and replace only the value, so an operator can still
+see *what* was removed. Two behaviours are deliberate:
+
+- **Fail closed.** A value that cannot be redacted becomes `[REDACTED]`
+  outright rather than being emitted raw. Redaction never raises.
+- **Redact before persist.** `console_audit.build_event` redacts before
+  serialization, and `write_event` re-scans and **drops** any record that still
+  trips a detector. An unredacted record is never durable.
+
+`scan_for_secrets` is the assertion helper: it returns the detector names still
+matching a payload, and already-redacted hits are not findings. Tests use it to
+prove the published policy, the security-model endpoint, and this document
+itself carry no secret material.
+
+## Audit event schema
+
+`gitea_audit` records MCP-side *mutations* — which profile and Gitea user
+performed which tool call. It has no console actor, no identity source, no
+correlation identifier, and no retention class, and an authorization **denial**
+is not a mutation, so it would never appear there at all. The console record is
+additive, not a replacement: a Phase 2 action emits both, joined on
+`correlation.request_id`.
+
+Required fields, all asserted by tests so an edit cannot quietly drop one:
+
+| Field | Content |
+|-------|---------|
+| `schema_version` | Currently `1`. |
+| `event_id` | Unique per record. |
+| `timestamp` | Timezone-aware ISO-8601, UTC. |
+| `actor` | `subject`, `role`, `identity_source`, `authenticated`. |
+| `action` | Console action id. |
+| `action_class` | `gated_write`, `privileged`, `destructive`, or `unknown`. |
+| `target` | `{kind, ref}`, e.g. `{"kind": "pr", "ref": "#123"}`. |
+| `result` | `allowed`, `denied`, `previewed`, `failed`, `succeeded`. |
+| `reason_code` | The authorization reason code above. |
+| `correlation` | `request_id`, `session_id`, `mcp_task`, `mcp_permission`. |
+| `retention` | `class`, `days`, `expires_at`. |
+| `redacted` | Always `true`; records are redacted at build time. |
+
+An unrecognised `result` degrades to `failed` rather than being stored
+verbatim.
+
+The sink is an append-only JSON Lines file named by
+`WEBUI_CONSOLE_AUDIT_LOG`. It is **off by default**: with the variable unset,
+events are still built — so callers and tests exercise the schema — but nothing
+is written. Auditing never raises; a failed write returns `False` rather than
+breaking the request it describes.
+
+## Retention
+
+| Class | Applies to | Default |
+|-------|-----------|---------|
+| `standard` | Routine gated writes | 90 days |
+| `privileged` | `review_pr`, `close_pr`, and any unclassifiable action | 365 days |
+| `break_glass` | `merge_pr`, `delete_branch` | 730 days |
+
+Each record carries its own class, day count, and computed `expires_at`, so
+retention is auditable per record rather than inferred from file age. An
+**unknown action is retained as privileged, not standard** — for a safety
+control the conservative direction is to keep the record longer.
+
+Nothing in this module updates or deletes. Expiry is enforced by an
+operator-run policy against `expires_at`, never by the console silently
+rewriting its own history.
+
+## Phase 2 integration
+
+Phase 2 opens gated writes. It must reuse this model rather than introduce a
+second one. The integration points are already wired and observable:
+
+- **`GET /api/actions/{action_id}/preview`** attaches an `authorization` block
+  to the existing preview payload and records a `previewed` audit event.
+- **`POST /api/actions/{action_id}/attempt`** attaches the same block and
+  records a `denied` event. The terminal outcome is unchanged — the MVP
+  registry in `webui/gated_actions.py` still fails closed for every action — so
+  Phase 1 cannot loosen anything. Phase 2 enforces on this same decision
+  instead of adding a parallel check.
+- **`GET /api/console/security-model`** publishes the RBAC matrix, redaction
+  policy, and audit policy as JSON for operators and tests.
+
+To open Phase 2, a child issue must: raise `ACTIVE_PHASE`, implement the
+confirmation and dual-control flow the matrix already declares, emit a
+`succeeded` or `failed` record alongside the `gitea_audit` mutation record, and
+keep `viewer` unable to reach any of it. Turning on execution without the
+confirmation flow contradicts a declared requirement and is a review failure,
+not a shortcut.
+
+## Local-dev mode
+
+`WEBUI_AUTH_MODE=local-dev` reads the principal straight from the environment:
+
+| Variable | Purpose |
+|----------|---------|
+| `WEBUI_DEV_SUBJECT` | Subject string; absent ⇒ anonymous |
+| `WEBUI_DEV_ROLE` | One of `viewer`, `operator`, `controller`, `admin`; unrecognised ⇒ `viewer` |
+
+**INSECURE — this mode is for loopback development only.** The subject and role
+are *asserted by the developer running the process and verified by nothing*.
+Anyone able to set an environment variable on the host is an `admin`, and
+anyone able to reach the port inherits that principal. It provides no
+authentication whatsoever; it exists so Phase 2 authorization paths can be
+exercised without standing up a proxy.
+
+Never enable local-dev mode on a non-loopback bind. Combining it with
+`WEBUI_ALLOW_PUBLIC_BIND=1` or `WEBUI_ALLOW_REMOTE_BIND=1` publishes an
+unauthenticated admin console.
+
+For anything beyond a laptop use `access-proxy` mode behind Cloudflare Access,
+WARP, or a VPN, as [`webui-deployment.md`](webui-deployment.md) requires.
+
+### Probe authentication
+
+`WEBUI_REQUIRE_PROBE_AUTH=1` declares that non-public probes should require an
+authenticated principal. It is **opt-in**: the default is off so the MVP
+`/health` contract is unchanged.
+
+**This flag is declarative in Phase 1 and enforces nothing today.**
+`console_authz.probe_auth_required()` reports the operator's intent, and no
+route consults it — setting the variable does not currently change the
+behaviour of `/health` or any other endpoint. It is published here so the Phase
+2 action framework has a declared policy to honour rather than inventing a
+second one, exactly as `ACTIVE_PHASE` gates execution while the matrix is
+already declared. A regression test pins this "declared, not enforced" status,
+so wiring it later is a deliberate change rather than a silent one.
+
+Until Phase 2 wires it, probe protection rests on network placement alone, as
+[`webui-deployment.md`](webui-deployment.md) (#435) states.
+
+## Environment variables
+
+| Variable | Default | Purpose |
+|----------|---------|---------|
+| `WEBUI_AUTH_MODE` | `none` | Identity source selection |
+| `WEBUI_DEV_SUBJECT` | unset | Local-dev subject (insecure) |
+| `WEBUI_DEV_ROLE` | `viewer` | Local-dev role (insecure) |
+| `WEBUI_ROLE_MAP` | unset | JSON subject → role map |
+| `WEBUI_REQUIRE_PROBE_AUTH` | unset | Require auth for non-public probes |
+| `WEBUI_CONSOLE_AUDIT_LOG` | unset | Append-only audit sink path |
+
+All are read server-side only. None is ever rendered into a page or returned by
+an API.
+
+## Non-goals
+
+- No full SSO product; authentication stays delegated to the proxy.
+- No browser-initiated merges or approvals in any phase covered here.
+- No tokens in the frontend, in browser storage, or in committed config.

docs/webui-deployment.md

@@ -7,7 +7,10 @@ only.
 ## MVP deployment model
 
 - **Default bind:** `127.0.0.1:8765` (`WEBUI_HOST` / `WEBUI_PORT`)
-- **Authentication:** none in MVP — protection comes from network placement
+- **Authentication:** none in MVP — protection comes from network placement.
+  The authorization, RBAC, redaction, and audit model that future gated writes
+  must pass through is defined in
+  [`webui-authz-audit.md`](webui-authz-audit.md) (#633).
 - **Mutations:** read-only routes; gated write actions remain disabled (#434)
 - **Secrets:** resolved server-side via `gitea_auth` / `GITEA_MCP_CONFIG`; never
   embedded in HTML, JavaScript, or browser storage

tests/test_webui_console_authz_audit.py

@@ -0,0 +1,703 @@
+"""Console authorization, redaction, and audit model tests (#633).
+
+Covers each acceptance criterion and each required test named in the issue:
+
+* AC1 — RBAC matrix and privileged-action list.
+* AC2 — redaction rules, unit-tested against sample payloads.
+* AC3 — audit event schema with required fields and retention defaults.
+* AC4 — Phase 2 integration points.
+* AC5 — local-dev mode with explicit insecurity warnings.
+
+Required tests: redaction units (token, keychain, password patterns),
+default-deny for unauthenticated write stubs, and audit record creation for a
+simulated privileged preview.
+"""
+
+from __future__ import annotations
+
+import datetime
+import json
+import os
+import pathlib
+import sys
+import tempfile
+import unittest
+
+from starlette.testclient import TestClient
+
+sys.path.insert(0, str(pathlib.Path(__file__).resolve().parents[1]))
+
+from task_capability_map import TASK_CAPABILITY_MAP  # noqa: E402
+from webui import console_audit, console_authz  # noqa: E402
+from webui.app import create_app  # noqa: E402
+from webui.console_redaction import (  # noqa: E402
+    REDACTED,
+    redact_payload,
+    redact_text,
+    redaction_policy,
+    scan_for_secrets,
+)
+
+DOCS = pathlib.Path(__file__).resolve().parents[1] / "docs"
+AUTHZ_DOC = DOCS / "webui-authz-audit.md"
+
+
+def _principal(role: str) -> console_authz.Principal:
+    return console_authz.Principal(
+        subject=f"{role}@example.com",
+        role=role,
+        identity_source=console_authz.IDENTITY_ACCESS_PROXY,
+        authenticated=True,
+    )
+
+
+class TestRoleMatrix(unittest.TestCase):
+    """AC1 — the written RBAC matrix and privileged-action list."""
+
+    def test_roles_are_ordered_least_to_most_authority(self):
+        self.assertEqual(
+            console_authz.ROLE_ORDER,
+            ("viewer", "operator", "controller", "admin"),
+        )
+
+    def test_every_role_has_a_description(self):
+        for role in console_authz.ROLE_ORDER:
+            with self.subTest(role=role):
+                self.assertTrue(console_authz.ROLE_DESCRIPTIONS[role].strip())
+
+    def test_higher_roles_inherit_lower_role_actions(self):
+        matrix = {
+            entry["role"]: set(entry["permitted_actions"])
+            for entry in console_authz.rbac_matrix()["roles"]
+        }
+        for lower, higher in zip(
+            console_authz.ROLE_ORDER, console_authz.ROLE_ORDER[1:]
+        ):
+            with self.subTest(lower=lower, higher=higher):
+                self.assertTrue(matrix[lower].issubset(matrix[higher]))
+
+    def test_viewer_holds_no_write_action(self):
+        matrix = {
+            entry["role"]: set(entry["permitted_actions"])
+            for entry in console_authz.rbac_matrix()["roles"]
+        }
+        self.assertEqual(matrix["viewer"], set())
+
+    def test_privileged_action_list_is_non_empty_and_classified(self):
+        privileged = console_authz.privileged_actions()
+        self.assertTrue(privileged)
+        ids = {action.action_id for action in privileged}
+        # Merge and branch deletion are the canonical privileged pair.
+        self.assertIn("merge_pr", ids)
+        self.assertIn("delete_branch", ids)
+
+    def test_merge_and_delete_require_dual_control_and_break_glass(self):
+        for action_id in ("merge_pr", "delete_branch"):
+            with self.subTest(action=action_id):
+                action = console_authz.get_action(action_id)
+                self.assertTrue(action.dual_control)
+                self.assertTrue(action.break_glass)
+                self.assertTrue(action.requires_confirmation)
+
+    def test_every_write_action_requires_confirmation(self):
+        for action in console_authz.ACTIONS.values():
+            with self.subTest(action=action.action_id):
+                self.assertTrue(action.requires_confirmation)
+
+    def test_delete_branch_is_admin_only(self):
+        self.assertEqual(
+            console_authz.get_action("delete_branch").minimum_role,
+            console_authz.ADMIN,
+        )
+
+    def test_actions_map_to_real_mcp_capability_vocabulary(self):
+        """The console must not invent an authority the MCP layer lacks."""
+        for action in console_authz.ACTIONS.values():
+            with self.subTest(action=action.action_id):
+                self.assertIn(action.task_key, TASK_CAPABILITY_MAP)
+                self.assertEqual(
+                    action.mcp_permission,
+                    TASK_CAPABILITY_MAP[action.task_key]["permission"],
+                )
+                self.assertEqual(
+                    action.mcp_role,
+                    TASK_CAPABILITY_MAP[action.task_key]["role"],
+                )
+
+    def test_matrix_declares_deny_by_default_and_execution_disabled(self):
+        matrix = console_authz.rbac_matrix()
+        self.assertEqual(matrix["default_decision"], "deny")
+        self.assertFalse(matrix["execution_enabled"])
+
+
+class TestAuthorizeDefaultDeny(unittest.TestCase):
+    """Fail-closed behaviour of the authorization decision."""
+
+    def test_anonymous_is_denied_every_action(self):
+        for action_id in console_authz.ACTIONS:
+            with self.subTest(action=action_id):
+                decision = console_authz.authorize(action_id)
+                self.assertFalse(decision.allowed)
+                self.assertEqual(
+                    decision.reason_code, console_authz.DENY_UNAUTHENTICATED
+                )
+
+    def test_unknown_action_is_denied(self):
+        decision = console_authz.authorize(
+            "not_a_real_action", _principal("admin")
+        )
+        self.assertFalse(decision.allowed)
+        self.assertEqual(decision.reason_code, console_authz.DENY_UNKNOWN_ACTION)
+
+    def test_unknown_role_is_denied(self):
+        rogue = console_authz.Principal(
+            subject="[email protected]",
+            role="superuser",
+            identity_source=console_authz.IDENTITY_ACCESS_PROXY,
+            authenticated=True,
+        )
+        decision = console_authz.authorize("comment_issue", rogue)
+        self.assertFalse(decision.allowed)
+        self.assertEqual(decision.reason_code, console_authz.DENY_UNKNOWN_ROLE)
+
+    def test_insufficient_role_is_denied(self):
+        decision = console_authz.authorize("merge_pr", _principal("operator"))
+        self.assertFalse(decision.allowed)
+        self.assertEqual(
+            decision.reason_code, console_authz.DENY_INSUFFICIENT_ROLE
+        )
+
+    def test_sufficient_role_allows_preview_only(self):
+        decision = console_authz.authorize("merge_pr", _principal("controller"))
+        self.assertTrue(decision.allowed)
+        self.assertFalse(decision.execution_enabled)
+
+    def test_execution_is_refused_while_phase_is_not_active(self):
+        decision = console_authz.authorize(
+            "merge_pr", _principal("controller"), for_execution=True
+        )
+        self.assertFalse(decision.allowed)
+        self.assertEqual(
+            decision.reason_code, console_authz.DENY_PHASE_NOT_ACTIVE
+        )
+
+    def test_allowed_decision_never_reports_execution_enabled(self):
+        for action_id in console_authz.ACTIONS:
+            with self.subTest(action=action_id):
+                decision = console_authz.authorize(
+                    action_id, _principal("admin")
+                )
+                self.assertFalse(decision.execution_enabled)
+
+
+class TestIdentityResolution(unittest.TestCase):
+    """AC5 — identity sources, including the insecure local-dev mode."""
+
+    def test_no_auth_mode_yields_anonymous_viewer(self):
+        principal = console_authz.resolve_principal(env={})
+        self.assertFalse(principal.authenticated)
+        self.assertEqual(principal.role, console_authz.VIEWER)
+        self.assertEqual(principal.identity_source, console_authz.IDENTITY_NONE)
+
+    def test_local_dev_mode_warns_that_identity_is_unverified(self):
+        principal = console_authz.resolve_principal(
+            env={
+                console_authz.AUTH_MODE_ENV: "local-dev",
+                console_authz.DEV_SUBJECT_ENV: "[email protected]",
+                console_authz.DEV_ROLE_ENV: "admin",
+            }
+        )
+        self.assertTrue(principal.authenticated)
+        self.assertEqual(principal.role, "admin")
+        self.assertTrue(principal.warnings)
+        self.assertIn("asserted", " ".join(principal.warnings).lower())
+
+    def test_local_dev_without_subject_falls_back_to_anonymous(self):
+        principal = console_authz.resolve_principal(
+            env={console_authz.AUTH_MODE_ENV: "local-dev"}
+        )
+        self.assertFalse(principal.authenticated)
+
+    def test_local_dev_unknown_role_degrades_to_viewer(self):
+        principal = console_authz.resolve_principal(
+            env={
+                console_authz.AUTH_MODE_ENV: "local_dev",
+                console_authz.DEV_SUBJECT_ENV: "[email protected]",
+                console_authz.DEV_ROLE_ENV: "root",
+            }
+        )
+        self.assertEqual(principal.role, console_authz.VIEWER)
+
+    def test_access_proxy_without_header_fails_closed(self):
+        """A proxy-mode request that did not traverse the proxy is anonymous."""
+        principal = console_authz.resolve_principal(
+            headers={},
+            env={console_authz.AUTH_MODE_ENV: "access_proxy"},
+        )
+        self.assertFalse(principal.authenticated)
+
+    def test_access_proxy_role_comes_from_server_config_not_client(self):
+        env = {
+            console_authz.AUTH_MODE_ENV: "access_proxy",
+            console_authz.ROLE_MAP_ENV: json.dumps(
+                {"[email protected]": "controller"}
+            ),
+        }
+        principal = console_authz.resolve_principal(
+            headers={
+                console_authz.ACCESS_SUBJECT_HEADER: "[email protected]",
+                "x-role": "admin",  # client-supplied role must be ignored
+            },
+            env=env,
+        )
+        self.assertEqual(principal.role, "controller")
+
+    def test_access_proxy_unmapped_subject_defaults_to_viewer(self):
+        principal = console_authz.resolve_principal(
+            headers={
+                console_authz.ACCESS_SUBJECT_HEADER: "[email protected]"
+            },
+            env={console_authz.AUTH_MODE_ENV: "access_proxy"},
+        )
+        self.assertEqual(principal.role, console_authz.VIEWER)
+
+    def test_malformed_role_map_does_not_raise_and_denies(self):
+        principal = console_authz.resolve_principal(
+            headers={console_authz.ACCESS_SUBJECT_HEADER: "[email protected]"},
+            env={
+                console_authz.AUTH_MODE_ENV: "access_proxy",
+                console_authz.ROLE_MAP_ENV: "{not json",
+            },
+        )
+        self.assertEqual(principal.role, console_authz.VIEWER)
+
+    def test_probe_auth_is_opt_in(self):
+        self.assertFalse(console_authz.probe_auth_required(env={}))
+        self.assertTrue(
+            console_authz.probe_auth_required(
+                env={console_authz.REQUIRE_PROBE_AUTH_ENV: "1"}
+            )
+        )
+
+    def test_probe_auth_is_declared_but_not_yet_enforced(self):
+        """Phase 1 declares the probe-auth policy; no route enforces it yet.
+
+        The flag exists so the Phase 2 action framework has a declared policy
+        to honour instead of inventing a second one. Pinning the current
+        not-enforced status here means wiring it later is a deliberate change
+        that updates this test and the documentation together, rather than a
+        silent behaviour shift. The documentation must say so plainly, because
+        an operator who sets the variable believing it protects a probe is
+        worse off than one who knows it does not.
+        """
+        import inspect
+
+        from webui import app as webui_app
+
+        source = inspect.getsource(webui_app)
+        self.assertNotIn(
+            "probe_auth_required",
+            source,
+            msg=(
+                "webui.app now consults probe_auth_required, so probe auth is "
+                "no longer merely declared. Update the 'Probe authentication' "
+                "section of docs/webui-authz-audit.md, which states it "
+                "enforces nothing, and replace this test with real "
+                "enforcement coverage."
+            ),
+        )
+        self.assertIn(
+            "enforces nothing today",
+            AUTHZ_DOC.read_text(encoding="utf-8"),
+        )
+
+
+class TestRedaction(unittest.TestCase):
+    """AC2 — required redaction units: token, keychain, password patterns."""
+
+    def test_token_assignment_is_redacted(self):
+        out = redact_text("GITEA_TOKEN=abcd1234efgh5678ijkl")
+        self.assertIn(REDACTED, out)
+        self.assertNotIn("abcd1234efgh5678ijkl", out)
+
+    def test_password_assignment_is_redacted(self):
+        out = redact_text("password: hunter2supersecret")
+        self.assertIn(REDACTED, out)
+        self.assertNotIn("hunter2supersecret", out)
+
+    def test_keychain_reference_is_redacted(self):
+        out = redact_text("keychain:gitea-prgs-token")
+        self.assertIn(REDACTED, out)
+        self.assertNotIn("gitea-prgs-token", out)
+
+    def test_keychain_command_is_redacted(self):
+        out = redact_text("security find-generic-password -s gitea -w")
+        self.assertIn(REDACTED, out)
+        self.assertNotIn("find-generic-password -s gitea", out)
+
+    def test_bearer_credential_is_redacted(self):
+        out = redact_text("Authorization: Bearer abcdef1234567890abcdef")
+        self.assertNotIn("abcdef1234567890abcdef", out)
+
+    def test_jwt_is_redacted(self):
+        token = "eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiIxIn0.abcdefghijklmnop"
+        out = redact_text(f"session={token}")
+        self.assertNotIn(token, out)
+
+    def test_private_key_block_is_redacted(self):
+        pem = (
+            "-----BEGIN RSA PRIVATE KEY-----\n"
+            "MIIEowIBAAKCAQEAsecretmaterial\n"
+            "-----END RSA PRIVATE KEY-----"
+        )
+        out = redact_text(pem)
+        self.assertNotIn("MIIEowIBAAKCAQEAsecretmaterial", out)
+
+    def test_api_key_assignment_is_redacted(self):
+        out = redact_text('api_key = "sk-live-9f8e7d6c5b4a3210"')
+        self.assertNotIn("sk-live-9f8e7d6c5b4a3210", out)
+
+    def test_nested_payload_is_redacted_recursively(self):
+        payload = {
+            "token": "abc123456789",
+            "nested": {"note": "password=letmein12345"},
+            "list": ["keychain:some-entry"],
+            "safe": "plain text",
+        }
+        out = redact_payload(payload)
+        self.assertEqual(out["token"], REDACTED)
+        self.assertNotIn("letmein12345", json.dumps(out))
+        self.assertNotIn("some-entry", json.dumps(out))
+        self.assertEqual(out["safe"], "plain text")
+
+    def test_scan_reports_findings_before_and_none_after(self):
+        dirty = "password: hunter2supersecret"
+        self.assertTrue(scan_for_secrets(dirty))
+        self.assertEqual(scan_for_secrets(redact_text(dirty)), [])
+
+    def test_non_strings_pass_through_untouched(self):
+        self.assertEqual(redact_text(42), 42)
+        self.assertEqual(
+            redact_payload({"n": 1, "b": True}), {"n": 1, "b": True}
+        )
+
+    def test_policy_is_documented_and_declares_redact_before_persist(self):
+        policy = redaction_policy()
+        self.assertTrue(policy["redact_before_persist"])
+        self.assertIn("audit_records", policy["applies_to"])
+        self.assertTrue(policy["console_rules"])
+
+    def test_policy_statement_contains_no_secret_material(self):
+        self.assertEqual(scan_for_secrets(redaction_policy()), [])
+
+
+class TestAuditSchema(unittest.TestCase):
+    """AC3 — audit event schema, required fields, and retention defaults."""
+
+    def _event(self, action_id="merge_pr", **kwargs):
+        return console_audit.build_event(
+            action_id=action_id,
+            result=console_audit.RESULT_DENIED,
+            decision=console_authz.authorize(action_id, _principal("operator")),
+            target={"kind": "pr", "ref": "#123"},
+            request_id="req-test",
+            **kwargs,
+        )
+
+    def test_every_required_field_is_present(self):
+        event = self._event()
+        for field in console_audit.REQUIRED_FIELDS:
+            with self.subTest(field=field):
+                self.assertIn(field, event)
+
+    def test_actor_carries_who_and_how_they_were_identified(self):
+        event = self._event()
+        for field in console_audit.REQUIRED_ACTOR_FIELDS:
+            with self.subTest(field=field):
+                self.assertIn(field, event["actor"])
+
+    def test_correlation_ids_are_present(self):
+        event = self._event()
+        for field in console_audit.REQUIRED_CORRELATION_FIELDS:
+            with self.subTest(field=field):
+                self.assertIn(field, event["correlation"])
+        self.assertEqual(event["correlation"]["request_id"], "req-test")
+        self.assertEqual(event["correlation"]["mcp_task"], "merge_pr")
+
+    def test_timestamp_is_timezone_aware_utc_iso8601(self):
+        now = datetime.datetime(
+            2026, 7, 22, 10, 16, 42, tzinfo=datetime.timezone.utc
+        )
+        event = self._event(now=now)
+        self.assertEqual(event["timestamp"], "2026-07-22T10:16:42+00:00")
+        parsed = datetime.datetime.fromisoformat(event["timestamp"])
+        self.assertIsNotNone(parsed.tzinfo)
+
+    def test_retention_defaults_by_class(self):
+        self.assertEqual(
+            console_audit.RETENTION_DAYS[console_audit.RETENTION_STANDARD], 90
+        )
+        self.assertEqual(
+            console_audit.RETENTION_DAYS[console_audit.RETENTION_PRIVILEGED],
+            365,
+        )
+        self.assertEqual(
+            console_audit.RETENTION_DAYS[console_audit.RETENTION_BREAK_GLASS],
+            730,
+        )
+
+    def test_break_glass_action_retains_longest(self):
+        event = self._event("merge_pr")
+        self.assertEqual(
+            event["retention"]["class"], console_audit.RETENTION_BREAK_GLASS
+        )
+
+    def test_routine_write_uses_standard_retention(self):
+        event = self._event("comment_issue")
+        self.assertEqual(
+            event["retention"]["class"], console_audit.RETENTION_STANDARD
+        )
+
+    def test_unknown_action_retains_as_privileged_not_standard(self):
+        """Conservative direction: keep an unclassifiable record longer."""
+        self.assertEqual(
+            console_audit.retention_class_for(None),
+            console_audit.RETENTION_PRIVILEGED,
+        )
+
+    def test_retention_expiry_matches_declared_days(self):
+        now = datetime.datetime(2026, 7, 22, tzinfo=datetime.timezone.utc)
+        event = self._event("comment_issue", now=now)
+        expires = datetime.datetime.fromisoformat(
+            event["retention"]["expires_at"]
+        )
+        self.assertEqual((expires - now).days, 90)
+
+    def test_invalid_result_degrades_to_failed(self):
+        event = console_audit.build_event(action_id="merge_pr", result="banana")
+        self.assertEqual(event["result"], console_audit.RESULT_FAILED)
+
+    def test_denied_result_is_representable(self):
+        """An authorization denial has no MCP-side mutation record."""
+        self.assertIn(console_audit.RESULT_DENIED, console_audit.RESULTS)
+
+    def test_event_is_redacted_before_it_is_returned(self):
+        event = console_audit.build_event(
+            action_id="merge_pr",
+            result=console_audit.RESULT_DENIED,
+            detail="failed with token=abcdef1234567890",
+            metadata={"password": "hunter2supersecret"},
+        )
+        serialized = json.dumps(event)
+        self.assertNotIn("abcdef1234567890", serialized)
+        self.assertNotIn("hunter2supersecret", serialized)
+        self.assertTrue(event["redacted"])
+
+    def test_audit_policy_reports_schema_and_retention(self):
+        policy = console_audit.audit_policy()
+        self.assertTrue(policy["append_only"])
+        self.assertTrue(policy["redact_before_persist"])
+        self.assertEqual(
+            policy["retention_defaults_days"], console_audit.RETENTION_DAYS
+        )
+
+
+class TestAuditSink(unittest.TestCase):
+    """Append-only persistence behaviour."""
+
+    def test_write_is_a_noop_when_sink_is_unconfigured(self):
+        saved = os.environ.pop(console_audit.AUDIT_LOG_ENV, None)
+        try:
+            self.assertFalse(console_audit.audit_enabled())
+            self.assertFalse(console_audit.write_event({"schema_version": 1}))
+        finally:
+            if saved is not None:
+                os.environ[console_audit.AUDIT_LOG_ENV] = saved
+
+    def test_records_append_one_json_line_each(self):
+        with tempfile.TemporaryDirectory() as tmp:
+            sink = os.path.join(tmp, "console-audit.jsonl")
+            for _ in range(3):
+                event = console_audit.build_event(
+                    action_id="merge_pr", result=console_audit.RESULT_DENIED
+                )
+                self.assertTrue(console_audit.write_event(event, path=sink))
+            with open(sink, encoding="utf-8") as handle:
+                lines = [json.loads(line) for line in handle if line.strip()]
+            self.assertEqual(len(lines), 3)
+            self.assertEqual(len({line["event_id"] for line in lines}), 3)
+
+    def test_a_record_that_still_carries_a_secret_is_not_persisted(self):
+        with tempfile.TemporaryDirectory() as tmp:
+            sink = os.path.join(tmp, "console-audit.jsonl")
+            leaky = {
+                "schema_version": 1,
+                "detail": "password: hunter2supersecret",
+            }
+            self.assertFalse(console_audit.write_event(leaky, path=sink))
+            self.assertFalse(os.path.exists(sink))
+
+    def test_write_never_raises_on_a_bad_path(self):
+        self.assertFalse(
+            console_audit.write_event(
+                {"schema_version": 1}, path="/nonexistent-dir/audit.jsonl"
+            )
+        )
+
+    def test_simulated_privileged_preview_creates_an_audit_record(self):
+        """Required test: audit record creation for a privileged preview."""
+        with tempfile.TemporaryDirectory() as tmp:
+            sink = os.path.join(tmp, "console-audit.jsonl")
+            os.environ[console_audit.AUDIT_LOG_ENV] = sink
+            try:
+                decision = console_authz.authorize(
+                    "merge_pr", _principal("controller")
+                )
+                outcome = console_audit.record_event(
+                    action_id="merge_pr",
+                    result=console_audit.RESULT_PREVIEWED,
+                    decision=decision,
+                    target={"kind": "pr", "ref": "#123"},
+                    request_id="req-preview",
+                )
+            finally:
+                os.environ.pop(console_audit.AUDIT_LOG_ENV, None)
+            self.assertTrue(outcome["written"])
+            with open(sink, encoding="utf-8") as handle:
+                record = json.loads(handle.read().strip())
+            self.assertEqual(record["action"], "merge_pr")
+            self.assertEqual(record["result"], console_audit.RESULT_PREVIEWED)
+            self.assertEqual(record["action_class"], "privileged")
+            self.assertTrue(record["decision"]["allowed"])
+            self.assertFalse(record["decision"]["execution_enabled"])
+            self.assertEqual(record["actor"]["role"], "controller")
+
+    def test_decision_block_survives_redaction(self):
+        """Regression: naming it 'authorization' collided with a secret hint.
+
+        ``gitea_audit._SECRET_KEY_HINTS`` contains "authorization" (for the
+        HTTP header), so a block under that key was replaced wholesale by the
+        placeholder and the record lost its decision entirely.
+        """
+        event = console_audit.build_event(
+            action_id="merge_pr",
+            result=console_audit.RESULT_DENIED,
+            decision=console_authz.authorize("merge_pr", _principal("admin")),
+        )
+        self.assertIsInstance(event["decision"], dict)
+        self.assertIn("allowed", event["decision"])
+
+
+class TestConsoleRoutes(unittest.TestCase):
+    """AC4 — the wired Phase 2 integration points, still fail-closed."""
+
+    def setUp(self):
+        self.client = TestClient(create_app(bind_host="127.0.0.1"))
+
+    def test_unauthenticated_write_stub_is_denied(self):
+        """Required test: default-deny for unauthenticated write stubs."""
+        response = self.client.post(
+            "/api/actions/merge_pr/attempt", json={"pr_number": 99}
+        )
+        self.assertEqual(response.status_code, 403)
+        body = response.json()
+        self.assertFalse(body["success"])
+        authorization = body["authorization"]
+        self.assertFalse(authorization["allowed"])
+        self.assertEqual(
+            authorization["reason_code"], console_authz.DENY_UNAUTHENTICATED
+        )
+        self.assertFalse(authorization["execution_enabled"])
+
+    def test_preview_reports_an_authorization_decision(self):
+        response = self.client.get("/api/actions/merge_pr/preview?pr_number=7")
+        self.assertEqual(response.status_code, 200)
+        authorization = response.json()["authorization"]
+        self.assertFalse(authorization["allowed"])
+        self.assertTrue(authorization["dual_control"])
+        self.assertEqual(authorization["required_role"], "controller")
+
+    def test_unknown_action_preview_still_404s(self):
+        response = self.client.get("/api/actions/no_such_action/preview")
+        self.assertEqual(response.status_code, 404)
+
+    def test_security_model_endpoint_publishes_all_three_policies(self):
+        response = self.client.get("/api/console/security-model")
+        self.assertEqual(response.status_code, 200)
+        body = response.json()
+        self.assertIn("rbac", body)
+        self.assertIn("redaction", body)
+        self.assertIn("audit", body)
+        self.assertEqual(body["rbac"]["default_decision"], "deny")
+
+    def test_security_model_endpoint_leaks_no_secrets(self):
+        response = self.client.get("/api/console/security-model")
+        self.assertEqual(scan_for_secrets(response.json()), [])
+
+    def test_security_model_rejects_writes(self):
+        response = self.client.post("/api/console/security-model", json={})
+        self.assertEqual(response.status_code, 405)
+
+    def test_existing_read_routes_are_unaffected(self):
+        for path in ("/", "/health", "/actions", "/api/actions"):
+            with self.subTest(path=path):
+                self.assertEqual(self.client.get(path).status_code, 200)
+
+
+class TestAuthzAuditDoc(unittest.TestCase):
+    """The model must be written down, not only coded."""
+
+    @classmethod
+    def setUpClass(cls):
+        cls.text = (
+            AUTHZ_DOC.read_text(encoding="utf-8") if AUTHZ_DOC.exists() else ""
+        )
+
+    def test_doc_exists(self):
+        self.assertTrue(AUTHZ_DOC.exists(), f"missing {AUTHZ_DOC}")
+
+    def test_doc_covers_each_required_section(self):
+        for heading in (
+            "Identity sources",
+            "Role matrix",
+            "Privileged actions",
+            "Secret redaction",
+            "Audit event schema",
+            "Retention",
+            "Phase 2 integration",
+            "Local-dev mode",
+        ):
+            with self.subTest(heading=heading):
+                self.assertIn(heading, self.text)
+
+    def test_doc_names_every_role(self):
+        for role in console_authz.ROLE_ORDER:
+            with self.subTest(role=role):
+                self.assertIn(role, self.text)
+
+    def test_doc_names_every_console_action(self):
+        for action_id in console_authz.ACTIONS:
+            with self.subTest(action=action_id):
+                self.assertIn(action_id, self.text)
+
+    def test_doc_states_retention_defaults(self):
+        for days in console_audit.RETENTION_DAYS.values():
+            with self.subTest(days=days):
+                self.assertIn(str(days), self.text)
+
+    def test_doc_warns_local_dev_is_insecure(self):
+        self.assertIn("INSECURE", self.text.upper())
+
+    def test_doc_states_default_deny(self):
+        self.assertIn("deny", self.text.lower())
+
+    def test_doc_contains_no_secret_material(self):
+        self.assertEqual(scan_for_secrets(self.text), [])
+
+    def test_deployment_doc_links_to_the_model(self):
+        deployment = (DOCS / "webui-deployment.md").read_text(encoding="utf-8")
+        self.assertIn("webui-authz-audit", deployment)
+
+
+if __name__ == "__main__":  # pragma: no cover
+    unittest.main()

webui/app.py

@@ -2,6 +2,7 @@
 
 from __future__ import annotations
 
+import uuid
 from datetime import datetime, timezone
 
 from starlette.applications import Starlette
@@ -19,6 +20,9 @@ from final_report_validator import FINAL_REPORT_TASK_KINDS
 
 from webui.gated_actions import attempt_action, load_action_registry, preview_action
 from webui.gated_action_views import render_actions_page
+from webui import console_audit
+from webui.console_authz import authorize, rbac_matrix, resolve_principal
+from webui.console_redaction import redaction_policy
 from webui.audit_validator import audit_report, audit_to_dict
 from webui.audit_views import render_audit_page
 from webui.lease_loader import load_lease_snapshot, snapshot_to_dict as lease_snapshot_to_dict
@@ -215,6 +219,49 @@ async def api_actions(_request: Request) -> JSONResponse:
     return JSONResponse(load_action_registry().to_dict())
 
 
+def _request_id() -> str:
+    return f"req-{uuid.uuid4().hex}"
+
+
+def _audit_target(action_id: str, params: dict[str, object]) -> dict[str, object]:
+    """Describe the action target for the audit record (never secrets)."""
+    if "pr_number" in params:
+        return {"kind": "pr", "ref": f"#{params['pr_number']}"}
+    if "issue_number" in params:
+        return {"kind": "issue", "ref": f"#{params['issue_number']}"}
+    if "branch_name" in params:
+        return {"kind": "branch", "ref": str(params["branch_name"])}
+    return {"kind": "unspecified", "ref": action_id}
+
+
+def _authorize_request(
+    request: Request,
+    action_id: str,
+    params: dict[str, object],
+    *,
+    for_execution: bool,
+    result: str,
+) -> dict[str, object]:
+    """Resolve principal, decide, and audit. Returns the decision payload.
+
+    Phase 1 records the decision rather than enforcing it as the terminal
+    outcome: ``webui.gated_actions`` already fails closed for every action, so
+    this layer cannot loosen anything. Phase 2 enforces on this same decision.
+    """
+    principal = resolve_principal(headers=dict(request.headers))
+    decision = authorize(action_id, principal, for_execution=for_execution)
+    console_audit.record_event(
+        action_id=action_id,
+        result=result,
+        decision=decision,
+        principal=principal,
+        target=_audit_target(action_id, params),
+        request_id=_request_id(),
+        detail=decision.detail,
+    )
+    return decision.to_dict()
+
+
 async def api_action_preview(request: Request) -> JSONResponse:
     action_id = request.path_params["action_id"]
     params = dict(request.query_params)
@@ -224,6 +271,13 @@ async def api_action_preview(request: Request) -> JSONResponse:
     result = preview_action(action_id, **params)
     if "error" in result:
         return JSONResponse(result, status_code=404)
+    result["authorization"] = _authorize_request(
+        request,
+        action_id,
+        params,
+        for_execution=False,
+        result=console_audit.RESULT_PREVIEWED,
+    )
     return JSONResponse(result)
 
 
@@ -237,10 +291,31 @@ async def api_action_attempt(request: Request) -> JSONResponse:
     if not isinstance(body, dict):
         body = {}
     result = attempt_action(action_id, **body)
+    authorization = _authorize_request(
+        request,
+        action_id,
+        body,
+        for_execution=True,
+        result=(
+            console_audit.RESULT_DENIED
+            if not result.get("success")
+            else console_audit.RESULT_ALLOWED
+        ),
+    )
+    result["authorization"] = authorization
     status = 403 if not result.get("success") else 200
     return JSONResponse(result, status_code=status)
 
 
+async def api_console_security_model(_request: Request) -> JSONResponse:
+    """Read-only publication of the #633 authorization/redaction/audit model."""
+    return JSONResponse({
+        "rbac": rbac_matrix(),
+        "redaction": redaction_policy(),
+        "audit": console_audit.audit_policy(),
+    })
+
+
 async def method_not_allowed(request: Request, _exc: Exception) -> Response:
     path = request.url.path
     if path in _AUDIT_MUTATION_PATHS and request.method == "POST":
@@ -291,6 +366,11 @@ def create_app(*, bind_host: str | None = None) -> Starlette:
                 methods=["POST"],
             ),
             Route("/api/leases", api_leases, methods=["GET"]),
+            Route(
+                "/api/console/security-model",
+                api_console_security_model,
+                methods=["GET"],
+            ),
         ],
         exception_handlers={405: method_not_allowed},
     )

webui/console_audit.py

@@ -0,0 +1,281 @@
+"""Console audit event schema, retention, and append-only sink (#633).
+
+``gitea_audit`` records MCP-side *mutations*: which profile and Gitea user
+performed which tool call. It carries no console actor, no identity source, no
+correlation identifier, and no retention class, so it cannot answer the
+question #633 exists to answer — *who sat at the console, what did they
+attempt, and was it authorized?* An authorization denial is not a mutation and
+would never appear there at all.
+
+This module adds the console-side record. It does not replace ``gitea_audit``:
+when a Phase 2 action eventually reaches MCP, both fire, correlated by
+``correlation.request_id``.
+
+Design constraints:
+
+- **Redact before persist.** Every record passes through
+  ``webui.console_redaction.redact_payload`` before serialization, so an
+  unredacted field is never durable.
+- **Append-only.** Records are appended as JSON lines. Nothing here updates or
+  deletes; retention is metadata on each record, enforced by an operator-run
+  policy, never by silent rewriting.
+- **Never raises.** Auditing must not break the request it describes. A failed
+  write returns ``False``.
+- **Off by default.** With ``WEBUI_CONSOLE_AUDIT_LOG`` unset, events are still
+  *built* (so callers and tests see the schema) but nothing is written.
+
+A record looks like this (synthetic values):
+
+    {"schema_version": 1, "event_id": "evt-0001",
+     "timestamp": "2026-07-22T10:16:42+00:00",
+     "actor": {"subject": "[email protected]", "role": "operator",
+               "identity_source": "access_proxy", "authenticated": true},
+     "action": "merge_pr", "action_class": "privileged",
+     "target": {"kind": "pr", "ref": "#123"},
+     "result": "denied", "reason_code": "insufficient_role",
+     "correlation": {"request_id": "req-abc", "session_id": null,
+                     "mcp_task": "merge_pr", "mcp_permission": "gitea.pr.merge"},
+     "retention": {"class": "privileged", "days": 365,
+                   "expires_at": "2027-07-22T10:16:42+00:00"},
+     "redacted": true}
+
+Timestamps are timezone-aware ISO-8601 in UTC.
+"""
+
+from __future__ import annotations
+
+import datetime
+import json
+import os
+import uuid
+from typing import Any
+
+from webui import console_authz
+from webui.console_redaction import redact_payload, scan_for_secrets
+
+SCHEMA_VERSION = 1
+
+AUDIT_LOG_ENV = "WEBUI_CONSOLE_AUDIT_LOG"
+
+# Result vocabulary. ``denied`` is the one ``gitea_audit`` has no equivalent
+# for: an authorization refusal never reaches the MCP layer.
+RESULT_ALLOWED = "allowed"
+RESULT_DENIED = "denied"
+RESULT_PREVIEWED = "previewed"
+RESULT_FAILED = "failed"
+RESULT_SUCCEEDED = "succeeded"
+
+RESULTS = frozenset(
+    {
+        RESULT_ALLOWED,
+        RESULT_DENIED,
+        RESULT_PREVIEWED,
+        RESULT_FAILED,
+        RESULT_SUCCEEDED,
+    }
+)
+
+# Retention classes and default lifetimes in days. Privileged and break-glass
+# records outlive routine ones because they are what an incident review needs.
+RETENTION_STANDARD = "standard"
+RETENTION_PRIVILEGED = "privileged"
+RETENTION_BREAK_GLASS = "break_glass"
+
+RETENTION_DAYS: dict[str, int] = {
+    RETENTION_STANDARD: 90,
+    RETENTION_PRIVILEGED: 365,
+    RETENTION_BREAK_GLASS: 730,
+}
+
+# Fields every record must carry. Asserted by the test suite so a future edit
+# cannot quietly drop one.
+REQUIRED_FIELDS: tuple[str, ...] = (
+    "schema_version",
+    "event_id",
+    "timestamp",
+    "actor",
+    "action",
+    "action_class",
+    "target",
+    "result",
+    "reason_code",
+    "correlation",
+    "retention",
+    "redacted",
+)
+
+REQUIRED_ACTOR_FIELDS: tuple[str, ...] = (
+    "subject",
+    "role",
+    "identity_source",
+    "authenticated",
+)
+
+REQUIRED_CORRELATION_FIELDS: tuple[str, ...] = (
+    "request_id",
+    "session_id",
+    "mcp_task",
+    "mcp_permission",
+)
+
+
+def audit_log_path() -> str | None:
+    """Configured sink path, or ``None`` when console auditing is off."""
+    return (os.environ.get(AUDIT_LOG_ENV) or "").strip() or None
+
+
+def audit_enabled() -> bool:
+    return audit_log_path() is not None
+
+
+def retention_class_for(action: console_authz.ConsoleAction | None) -> str:
+    """Classify retention from the action, defaulting to the longest-lived.
+
+    An unknown action is treated as privileged rather than standard: for a
+    safety control the conservative direction is to keep the record longer.
+    """
+    if action is None:
+        return RETENTION_PRIVILEGED
+    if action.break_glass:
+        return RETENTION_BREAK_GLASS
+    if action.privileged:
+        return RETENTION_PRIVILEGED
+    return RETENTION_STANDARD
+
+
+def _retention_block(
+    retention_class: str, now: datetime.datetime
+) -> dict[str, Any]:
+    days = RETENTION_DAYS.get(
+        retention_class, RETENTION_DAYS[RETENTION_PRIVILEGED]
+    )
+    return {
+        "class": retention_class,
+        "days": days,
+        "expires_at": (now + datetime.timedelta(days=days)).isoformat(),
+    }
+
+
+def build_event(
+    *,
+    action_id: str,
+    result: str,
+    decision: console_authz.AuthorizationDecision | None = None,
+    principal: console_authz.Principal | None = None,
+    target: dict[str, Any] | None = None,
+    reason_code: str | None = None,
+    request_id: str | None = None,
+    session_id: str | None = None,
+    detail: str | None = None,
+    metadata: dict[str, Any] | None = None,
+    now: datetime.datetime | None = None,
+    event_id: str | None = None,
+) -> dict[str, Any]:
+    """Build one redacted, JSON-able console audit record.
+
+    Redaction runs here rather than at write time so an in-memory record handed
+    to a template or an API response is already clean.
+    """
+    ts = now or datetime.datetime.now(datetime.timezone.utc)
+    action = console_authz.get_action(action_id)
+    who = principal or (
+        decision.principal if decision else console_authz.ANONYMOUS
+    )
+    resolved_result = result if result in RESULTS else RESULT_FAILED
+    resolved_reason = reason_code or (
+        decision.reason_code if decision else "unspecified"
+    )
+    retention_class = retention_class_for(action)
+
+    event: dict[str, Any] = {
+        "schema_version": SCHEMA_VERSION,
+        "event_id": event_id or f"evt-{uuid.uuid4().hex}",
+        "timestamp": ts.isoformat(),
+        "actor": who.to_dict(),
+        "action": action_id,
+        "action_class": action.action_class if action else "unknown",
+        "target": dict(target or {}),
+        "result": resolved_result,
+        "reason_code": resolved_reason,
+        "correlation": {
+            "request_id": request_id,
+            "session_id": session_id,
+            "mcp_task": action.task_key if action else None,
+            "mcp_permission": action.mcp_permission if action else None,
+        },
+        "retention": _retention_block(retention_class, ts),
+        "redacted": True,
+        "detail": detail,
+        "metadata": dict(metadata or {}),
+    }
+    if decision is not None:
+        # Deliberately *not* named "authorization": ``gitea_audit`` treats that
+        # substring as a secret key hint (it matches the HTTP Authorization
+        # header) and would replace this whole block with the placeholder.
+        event["decision"] = {
+            "allowed": decision.allowed,
+            "required_role": decision.required_role,
+            "requires_confirmation": decision.requires_confirmation,
+            "dual_control": decision.dual_control,
+            "break_glass": decision.break_glass,
+            "execution_enabled": decision.execution_enabled,
+        }
+
+    redacted = redact_payload(event)
+    if not isinstance(redacted, dict):  # pragma: no cover - defensive
+        return {"schema_version": SCHEMA_VERSION, "redacted": True}
+    return redacted
+
+
+def write_event(event: dict[str, Any], path: str | None = None) -> bool:
+    """Append *event* as one JSON line. Never raises.
+
+    Returns ``True`` when a line was written, ``False`` when auditing is off or
+    the write failed. A record that still trips a secret detector is dropped
+    rather than persisted.
+    """
+    sink = path or audit_log_path()
+    if not sink:
+        return False
+    try:
+        if scan_for_secrets(event):
+            return False
+        line = json.dumps(event, default=str, sort_keys=True)
+        with open(sink, "a", encoding="utf-8") as handle:
+            handle.write(line + "\n")
+        return True
+    except Exception:
+        return False
+
+
+def record_event(**kwargs: Any) -> dict[str, Any]:
+    """Build and persist one record; return the record either way.
+
+    Callers get the record back so it can be surfaced in a response or a test
+    regardless of whether a sink is configured.
+    """
+    event = build_event(**kwargs)
+    written = write_event(event)
+    return {"event": event, "written": written}
+
+
+def audit_policy() -> dict[str, Any]:
+    """Machine-readable audit schema and retention defaults (never secrets)."""
+    return {
+        "schema_version": SCHEMA_VERSION,
+        "required_fields": list(REQUIRED_FIELDS),
+        "required_actor_fields": list(REQUIRED_ACTOR_FIELDS),
+        "required_correlation_fields": list(REQUIRED_CORRELATION_FIELDS),
+        "results": sorted(RESULTS),
+        "retention_defaults_days": dict(RETENTION_DAYS),
+        "sink_env": AUDIT_LOG_ENV,
+        "enabled": audit_enabled(),
+        "append_only": True,
+        "redact_before_persist": True,
+        "timestamp_format": "ISO-8601, timezone-aware, UTC",
+        "relationship_to_mcp_audit": (
+            "webui.console_audit records console intent and authorization "
+            "outcomes; gitea_audit records MCP mutations. A Phase 2 action "
+            "emits both, correlated by correlation.request_id."
+        ),
+    }

webui/console_authz.py

@@ -0,0 +1,537 @@
+"""Console authorization and RBAC model (#633, Phase 1).
+
+The read-only MVP (#426–#436) ships with no authentication: protection comes
+from network placement alone (#435). That is adequate while every route is a
+GET, and inadequate the moment Phase 2 wires a gated write. This module is the
+authorization model those writes must go through, landed *before* any of them
+exists so no write can be added without an authority to check against.
+
+Phase 1 scope is the model itself: identity resolution, the role matrix, the
+privileged-action list, and a fail-closed :func:`authorize`. It deliberately
+does **not** enable any write. ``webui.gated_actions`` stays globally disabled,
+so an allow decision here is necessary but never sufficient.
+
+Two invariants hold for every caller:
+
+- **Default deny.** An unrecognised action, an unknown role, or an absent
+  principal denies. There is no implicit allow branch and no "unless" clause.
+- **Authorization is not execution.** :func:`authorize` returns a decision
+  record. It never calls MCP, never mutates, and never consults credentials.
+"""
+
+from __future__ import annotations
+
+import json
+import os
+from dataclasses import asdict, dataclass, field
+from typing import Any
+
+from task_capability_map import required_permission, required_role
+
+# --- Roles ------------------------------------------------------------------
+# Ordered least to most authority. Higher ranks inherit every lower rank's
+# permitted actions; the matrix below is expressed as a minimum required rank.
+VIEWER = "viewer"
+OPERATOR = "operator"
+CONTROLLER = "controller"
+ADMIN = "admin"
+
+ROLE_ORDER: tuple[str, ...] = (VIEWER, OPERATOR, CONTROLLER, ADMIN)
+_ROLE_RANK: dict[str, int] = {role: idx for idx, role in enumerate(ROLE_ORDER)}
+
+ROLE_DESCRIPTIONS: dict[str, str] = {
+    VIEWER: "Read every console view. No write, ever, in any phase.",
+    OPERATOR: "Viewer, plus author-class work: claim, comment, open a PR.",
+    CONTROLLER: "Operator, plus reviewer/merger-class decisions on a PR.",
+    ADMIN: "Controller, plus destructive and policy-editing actions.",
+}
+
+# --- Identity sources -------------------------------------------------------
+IDENTITY_NONE = "none"
+IDENTITY_LOCAL_DEV = "local_dev"
+IDENTITY_ACCESS_PROXY = "access_proxy"
+
+IDENTITY_SOURCES: dict[str, dict[str, Any]] = {
+    IDENTITY_NONE: {
+        "description": (
+            "No authentication configured. Every request is anonymous and "
+            "capped at viewer. This is the MVP default and the only mode "
+            "whose safety rests entirely on network placement (#435)."
+        ),
+        "authenticated": False,
+        "safe_for_shared_host": False,
+        "phase_available": 1,
+    },
+    IDENTITY_LOCAL_DEV: {
+        "description": (
+            "Developer-supplied principal read from the environment. INSECURE: "
+            "the subject and role are asserted, never verified. Loopback only."
+        ),
+        "authenticated": True,
+        "safe_for_shared_host": False,
+        "phase_available": 1,
+    },
+    IDENTITY_ACCESS_PROXY: {
+        "description": (
+            "Subject asserted by a trusted access proxy (Cloudflare Access, "
+            "WARP, or an org VPN portal) via a verified request header. The "
+            "proxy performs authentication; the console performs authorization."
+        ),
+        "authenticated": True,
+        "safe_for_shared_host": True,
+        "phase_available": 2,
+    },
+}
+
+# Environment configuration. All are read server-side and never rendered.
+AUTH_MODE_ENV = "WEBUI_AUTH_MODE"
+DEV_SUBJECT_ENV = "WEBUI_DEV_SUBJECT"
+DEV_ROLE_ENV = "WEBUI_DEV_ROLE"
+ROLE_MAP_ENV = "WEBUI_ROLE_MAP"
+REQUIRE_PROBE_AUTH_ENV = "WEBUI_REQUIRE_PROBE_AUTH"
+ACCESS_SUBJECT_HEADER = "cf-access-authenticated-user-email"
+
+# --- Action classes ---------------------------------------------------------
+CLASS_READ = "read"
+CLASS_WRITE = "gated_write"
+CLASS_PRIVILEGED = "privileged"
+CLASS_DESTRUCTIVE = "destructive"
+
+# --- Privileged action list -------------------------------------------------
+# ``task_key`` ties each console action back to ``task_capability_map``, so the
+# console cannot invent an authority the MCP layer does not already define.
+
+
+@dataclass(frozen=True)
+class ConsoleAction:
+    """One console action and the authority required to invoke it."""
+
+    action_id: str
+    task_key: str
+    action_class: str
+    minimum_role: str
+    requires_confirmation: bool
+    dual_control: bool
+    break_glass: bool
+    phase: int
+    summary: str
+
+    @property
+    def mcp_permission(self) -> str:
+        return required_permission(self.task_key)
+
+    @property
+    def mcp_role(self) -> str:
+        return required_role(self.task_key)
+
+    @property
+    def privileged(self) -> bool:
+        return self.action_class in {CLASS_PRIVILEGED, CLASS_DESTRUCTIVE}
+
+    def to_dict(self) -> dict[str, Any]:
+        data = asdict(self)
+        data["mcp_permission"] = self.mcp_permission
+        data["mcp_role"] = self.mcp_role
+        data["privileged"] = self.privileged
+        return data
+
+
+_ACTION_SPECS: tuple[ConsoleAction, ...] = (
+    ConsoleAction(
+        action_id="claim_issue",
+        task_key="claim_issue",
+        action_class=CLASS_WRITE,
+        minimum_role=OPERATOR,
+        requires_confirmation=True,
+        dual_control=False,
+        break_glass=False,
+        phase=2,
+        summary="Apply status:in-progress to an issue.",
+    ),
+    ConsoleAction(
+        action_id="comment_issue",
+        task_key="comment_issue",
+        action_class=CLASS_WRITE,
+        minimum_role=OPERATOR,
+        requires_confirmation=True,
+        dual_control=False,
+        break_glass=False,
+        phase=2,
+        summary="Post an issue comment.",
+    ),
+    ConsoleAction(
+        action_id="create_issue",
+        task_key="create_issue",
+        action_class=CLASS_WRITE,
+        minimum_role=OPERATOR,
+        requires_confirmation=True,
+        dual_control=False,
+        break_glass=False,
+        phase=2,
+        summary="Open a new tracking issue.",
+    ),
+    ConsoleAction(
+        action_id="comment_pr",
+        task_key="comment_pr",
+        action_class=CLASS_WRITE,
+        minimum_role=OPERATOR,
+        requires_confirmation=True,
+        dual_control=False,
+        break_glass=False,
+        phase=2,
+        summary="Post a PR thread comment.",
+    ),
+    ConsoleAction(
+        action_id="create_pr",
+        task_key="create_pr",
+        action_class=CLASS_WRITE,
+        minimum_role=OPERATOR,
+        requires_confirmation=True,
+        dual_control=False,
+        break_glass=False,
+        phase=2,
+        summary="Open a PR from a locked feature branch.",
+    ),
+    ConsoleAction(
+        action_id="review_pr",
+        task_key="review_pr",
+        action_class=CLASS_PRIVILEGED,
+        minimum_role=CONTROLLER,
+        requires_confirmation=True,
+        dual_control=False,
+        break_glass=False,
+        phase=3,
+        summary="Submit an approve / request-changes verdict.",
+    ),
+    ConsoleAction(
+        action_id="close_pr",
+        task_key="close_pr",
+        action_class=CLASS_PRIVILEGED,
+        minimum_role=CONTROLLER,
+        requires_confirmation=True,
+        dual_control=False,
+        break_glass=False,
+        phase=3,
+        summary="Close a pull request without merging.",
+    ),
+    ConsoleAction(
+        action_id="merge_pr",
+        task_key="merge_pr",
+        action_class=CLASS_PRIVILEGED,
+        minimum_role=CONTROLLER,
+        requires_confirmation=True,
+        dual_control=True,
+        break_glass=True,
+        phase=3,
+        summary="Merge an approved pull request.",
+    ),
+    ConsoleAction(
+        action_id="delete_branch",
+        task_key="delete_branch",
+        action_class=CLASS_DESTRUCTIVE,
+        minimum_role=ADMIN,
+        requires_confirmation=True,
+        dual_control=True,
+        break_glass=True,
+        phase=3,
+        summary="Remove a remote feature branch.",
+    ),
+)
+
+ACTIONS: dict[str, ConsoleAction] = {a.action_id: a for a in _ACTION_SPECS}
+
+
+def privileged_actions() -> tuple[ConsoleAction, ...]:
+    """Actions requiring dual control, break-glass, or controller+ authority."""
+    return tuple(a for a in _ACTION_SPECS if a.privileged)
+
+
+def get_action(action_id: str) -> ConsoleAction | None:
+    return ACTIONS.get(action_id)
+
+
+# --- Principals -------------------------------------------------------------
+
+
+@dataclass(frozen=True)
+class Principal:
+    """Who is making a request, and how strongly that is known."""
+
+    subject: str
+    role: str
+    identity_source: str
+    authenticated: bool
+    warnings: tuple[str, ...] = field(default_factory=tuple)
+
+    @property
+    def rank(self) -> int:
+        return _ROLE_RANK.get(self.role, -1)
+
+    def to_dict(self) -> dict[str, Any]:
+        return {
+            "subject": self.subject,
+            "role": self.role,
+            "identity_source": self.identity_source,
+            "authenticated": self.authenticated,
+            "warnings": list(self.warnings),
+        }
+
+
+ANONYMOUS = Principal(
+    subject="anonymous",
+    role=VIEWER,
+    identity_source=IDENTITY_NONE,
+    authenticated=False,
+    warnings=("No authentication configured; capped at viewer.",),
+)
+
+
+def auth_mode(env: dict[str, str] | None = None) -> str:
+    """Resolve the configured identity source, defaulting to ``none``."""
+    source = env if env is not None else os.environ
+    raw = (source.get(AUTH_MODE_ENV) or "").strip().lower().replace("-", "_")
+    if raw in IDENTITY_SOURCES:
+        return raw
+    return IDENTITY_NONE
+
+
+def _role_map(env: dict[str, str]) -> dict[str, str]:
+    """Parse ``WEBUI_ROLE_MAP`` (JSON subject→role). Invalid config yields {}."""
+    raw = (env.get(ROLE_MAP_ENV) or "").strip()
+    if not raw:
+        return {}
+    try:
+        parsed = json.loads(raw)
+    except Exception:
+        return {}
+    if not isinstance(parsed, dict):
+        return {}
+    return {
+        str(k): str(v).strip().lower()
+        for k, v in parsed.items()
+        if str(v).strip().lower() in _ROLE_RANK
+    }
+
+
+def resolve_principal(
+    headers: dict[str, str] | None = None,
+    env: dict[str, str] | None = None,
+) -> Principal:
+    """Resolve the requesting principal. Unknown or unconfigured → anonymous.
+
+    Never raises and never trusts a client-supplied role: the role always comes
+    from server-side configuration keyed by the resolved subject.
+    """
+    source_env = dict(env) if env is not None else dict(os.environ)
+    lowered = {str(k).lower(): str(v) for k, v in (headers or {}).items()}
+    mode = auth_mode(source_env)
+
+    if mode == IDENTITY_LOCAL_DEV:
+        subject = (source_env.get(DEV_SUBJECT_ENV) or "").strip()
+        if not subject:
+            return ANONYMOUS
+        role = (source_env.get(DEV_ROLE_ENV) or VIEWER).strip().lower()
+        if role not in _ROLE_RANK:
+            role = VIEWER
+        return Principal(
+            subject=subject,
+            role=role,
+            identity_source=IDENTITY_LOCAL_DEV,
+            authenticated=True,
+            warnings=(
+                "local-dev identity is asserted, not verified; never use "
+                "outside loopback.",
+            ),
+        )
+
+    if mode == IDENTITY_ACCESS_PROXY:
+        subject = (lowered.get(ACCESS_SUBJECT_HEADER) or "").strip()
+        if not subject:
+            # Proxy mode with no proxy header means the request did not
+            # traverse the proxy. Fail closed rather than trust it.
+            return ANONYMOUS
+        role = _role_map(source_env).get(subject, VIEWER)
+        return Principal(
+            subject=subject,
+            role=role,
+            identity_source=IDENTITY_ACCESS_PROXY,
+            authenticated=True,
+        )
+
+    return ANONYMOUS
+
+
+def probe_auth_required(env: dict[str, str] | None = None) -> bool:
+    """Whether non-public probes must be authenticated. Default False.
+
+    #633 requires the console to *fail closed on missing auth for non-public
+    health probes if configured*. The default stays off so the MVP ``/health``
+    contract is unchanged; an operator opts in explicitly.
+    """
+    source = env if env is not None else os.environ
+    return (source.get(REQUIRE_PROBE_AUTH_ENV) or "").strip().lower() in {
+        "1",
+        "true",
+        "yes",
+    }
+
+
+# --- Authorization ----------------------------------------------------------
+
+DENY_UNKNOWN_ACTION = "unknown_action"
+DENY_UNAUTHENTICATED = "unauthenticated"
+DENY_INSUFFICIENT_ROLE = "insufficient_role"
+DENY_UNKNOWN_ROLE = "unknown_role"
+DENY_PHASE_NOT_ACTIVE = "phase_not_active"
+ALLOW_PREVIEW = "allowed_preview_only"
+
+# Phase 1 is the only active console phase. Phase 2 opens gated writes and is
+# gated on this model landing; nothing here enables it.
+ACTIVE_PHASE = 1
+
+
+@dataclass(frozen=True)
+class AuthorizationDecision:
+    """Result of an authorization check. Never an execution grant."""
+
+    allowed: bool
+    reason_code: str
+    detail: str
+    action_id: str
+    principal: Principal
+    required_role: str | None = None
+    action_class: str | None = None
+    requires_confirmation: bool = False
+    dual_control: bool = False
+    break_glass: bool = False
+    execution_enabled: bool = False
+
+    def to_dict(self) -> dict[str, Any]:
+        return {
+            "allowed": self.allowed,
+            "reason_code": self.reason_code,
+            "detail": self.detail,
+            "action_id": self.action_id,
+            "principal": self.principal.to_dict(),
+            "required_role": self.required_role,
+            "action_class": self.action_class,
+            "requires_confirmation": self.requires_confirmation,
+            "dual_control": self.dual_control,
+            "break_glass": self.break_glass,
+            "execution_enabled": self.execution_enabled,
+            "active_phase": ACTIVE_PHASE,
+        }
+
+
+def authorize(
+    action_id: str,
+    principal: Principal | None = None,
+    *,
+    for_execution: bool = False,
+) -> AuthorizationDecision:
+    """Decide whether *principal* may invoke *action_id*. Deny by default.
+
+    ``for_execution`` distinguishes a read-only preview from a real invocation.
+    Even an allowed decision reports ``execution_enabled=False`` while the
+    console is in Phase 1, so no caller can read an allow as permission to
+    mutate.
+    """
+    who = principal if principal is not None else ANONYMOUS
+    action = get_action(action_id)
+
+    if action is None:
+        return AuthorizationDecision(
+            allowed=False,
+            reason_code=DENY_UNKNOWN_ACTION,
+            detail=f"No console action registered as {action_id!r}.",
+            action_id=action_id,
+            principal=who,
+        )
+
+    base: dict[str, Any] = {
+        "action_id": action_id,
+        "principal": who,
+        "required_role": action.minimum_role,
+        "action_class": action.action_class,
+        "requires_confirmation": action.requires_confirmation,
+        "dual_control": action.dual_control,
+        "break_glass": action.break_glass,
+        "execution_enabled": False,
+    }
+
+    if not who.authenticated:
+        return AuthorizationDecision(
+            allowed=False,
+            reason_code=DENY_UNAUTHENTICATED,
+            detail=(
+                "Write actions require an authenticated principal; this "
+                "request is anonymous."
+            ),
+            **base,
+        )
+
+    if who.rank < 0:
+        return AuthorizationDecision(
+            allowed=False,
+            reason_code=DENY_UNKNOWN_ROLE,
+            detail=f"Role {who.role!r} is not in the console role matrix.",
+            **base,
+        )
+
+    if who.rank < _ROLE_RANK[action.minimum_role]:
+        return AuthorizationDecision(
+            allowed=False,
+            reason_code=DENY_INSUFFICIENT_ROLE,
+            detail=(
+                f"Action {action_id!r} requires {action.minimum_role!r}; "
+                f"principal holds {who.role!r}."
+            ),
+            **base,
+        )
+
+    if for_execution and action.phase > ACTIVE_PHASE:
+        return AuthorizationDecision(
+            allowed=False,
+            reason_code=DENY_PHASE_NOT_ACTIVE,
+            detail=(
+                f"Action {action_id!r} belongs to phase {action.phase}; the "
+                f"console is in phase {ACTIVE_PHASE}. Execution is not wired."
+            ),
+            **base,
+        )
+
+    return AuthorizationDecision(
+        allowed=True,
+        reason_code=ALLOW_PREVIEW,
+        detail=(
+            "Principal holds the required role. Preview only — execution "
+            "remains disabled until the Phase 2 action framework ships."
+        ),
+        **base,
+    )
+
+
+def rbac_matrix() -> dict[str, Any]:
+    """Machine-readable RBAC matrix and privileged-action list."""
+    return {
+        "model_version": 1,
+        "active_phase": ACTIVE_PHASE,
+        "roles": [
+            {
+                "role": role,
+                "rank": _ROLE_RANK[role],
+                "description": ROLE_DESCRIPTIONS[role],
+                "permitted_actions": sorted(
+                    a.action_id
+                    for a in _ACTION_SPECS
+                    if _ROLE_RANK[role] >= _ROLE_RANK[a.minimum_role]
+                ),
+            }
+            for role in ROLE_ORDER
+        ],
+        "identity_sources": IDENTITY_SOURCES,
+        "actions": [a.to_dict() for a in _ACTION_SPECS],
+        "privileged_actions": [a.action_id for a in privileged_actions()],
+        "default_decision": "deny",
+        "execution_enabled": False,
+    }

webui/console_redaction.py

@@ -0,0 +1,169 @@
+"""Secret redaction policy for every console surface (#633).
+
+The MVP already redacts MCP-side mutation records through ``gitea_audit``.
+This module is the console-facing policy: one redaction pass applied to API
+payloads, rendered HTML, log lines, and audit records *before* they leave the
+server or reach persistent storage.
+
+Design constraints:
+
+- **Reuse, never fork.** ``gitea_audit.redact`` remains the authority for
+  secret-looking dict keys, ``Authorization`` material, and raw URLs. This
+  module runs that pass first and then applies console-specific patterns for
+  keychain references, key/value assignments, private-key blocks, and JWTs.
+- **Never raises.** Redaction is a safety control; a malformed payload must
+  degrade to a redacted placeholder rather than propagate an exception.
+- **Redact before persist.** ``webui.console_audit`` calls this module before
+  writing, so an unredacted record is never durable.
+"""
+
+from __future__ import annotations
+
+import json
+import re
+from typing import Any
+
+import gitea_audit
+
+REDACTED = gitea_audit.REDACTED
+
+# Console-specific patterns applied after the shared ``gitea_audit`` pass.
+# Each keeps the identifying key so an operator can still tell *what* was
+# removed, and replaces only the secret run itself.
+_KEYCHAIN_REF = re.compile(r"(?i)\bkeychain:[\w.\-/@]+")
+_KEYCHAIN_CMD = re.compile(
+    r"(?i)\bsecurity\s+find-(?:generic|internet)-password\b[^\n]*"
+)
+_ASSIGNMENT = re.compile(
+    r"(?i)\b(token|password|passwd|secret|api[_-]?key|access[_-]?key|"
+    r"client[_-]?secret|private[_-]?key)\b(\s*[:=]\s*)"
+    r"(\"[^\"]*\"|'[^']*'|\S+)"
+)
+_ENV_ASSIGNMENT = re.compile(
+    r"(?i)\b(GITEA_(?:TOKEN|PASS|PASSWORD)[A-Z0-9_]*)(\s*=\s*)"
+    r"(\"[^\"]*\"|'[^']*'|\S+)"
+)
+_PRIVATE_KEY_BLOCK = re.compile(
+    r"-----BEGIN [A-Z ]*PRIVATE KEY-----.*?-----END [A-Z ]*PRIVATE KEY-----",
+    re.S,
+)
+_JWT = re.compile(
+    r"\beyJ[A-Za-z0-9_\-]{8,}\.[A-Za-z0-9_\-]{8,}\.[A-Za-z0-9_\-]{8,}\b"
+)
+
+# Shapes that mean a payload still carries a secret. ``scan_for_secrets`` uses
+# these to assert a surface is clean.
+_DETECTORS: tuple[tuple[str, re.Pattern[str]], ...] = (
+    ("keychain_reference", _KEYCHAIN_REF),
+    ("keychain_command", _KEYCHAIN_CMD),
+    ("credential_assignment", _ASSIGNMENT),
+    ("credential_env_assignment", _ENV_ASSIGNMENT),
+    ("private_key_block", _PRIVATE_KEY_BLOCK),
+    ("json_web_token", _JWT),
+    ("bearer_credential", re.compile(r"(?i)\b(?:bearer|basic)\s+\S{8,}")),
+)
+
+
+def _mask_assignment(match: re.Match[str]) -> str:
+    """Keep the key and separator, replace the value."""
+    return f"{match.group(1)}{match.group(2)}{REDACTED}"
+
+
+def redact_text(text: Any) -> Any:
+    """Redact secret material from a single string.
+
+    Non-strings are returned unchanged so this is safe to map over mixed
+    payloads. Runs the shared ``gitea_audit`` pass first, then the
+    console-specific patterns.
+    """
+    if not isinstance(text, str) or not text:
+        return text
+    try:
+        out = gitea_audit.redact(text)
+        if not isinstance(out, str):  # defensive; redact() returns str for str
+            return REDACTED
+        out = _PRIVATE_KEY_BLOCK.sub(f"{REDACTED}_PRIVATE_KEY", out)
+        out = _ENV_ASSIGNMENT.sub(_mask_assignment, out)
+        out = _ASSIGNMENT.sub(_mask_assignment, out)
+        out = _KEYCHAIN_CMD.sub(f"{REDACTED}_KEYCHAIN_COMMAND", out)
+        out = _KEYCHAIN_REF.sub(f"{REDACTED}_KEYCHAIN_REF", out)
+        out = _JWT.sub(f"{REDACTED}_JWT", out)
+        return out
+    except Exception:
+        # Fail closed: an unredactable string is dropped rather than emitted raw.
+        return REDACTED
+
+
+def redact_payload(value: Any) -> Any:
+    """Recursively redact a JSON-able payload for any console surface.
+
+    Secret-looking dict keys are replaced wholesale by the shared
+    ``gitea_audit`` policy; every remaining string is run through
+    :func:`redact_text`.
+    """
+    try:
+        shared = gitea_audit.redact(value)
+    except Exception:
+        return REDACTED
+    return _walk(shared)
+
+
+def _walk(value: Any) -> Any:
+    if isinstance(value, dict):
+        return {k: _walk(v) for k, v in value.items()}
+    if isinstance(value, (list, tuple)):
+        return [_walk(v) for v in value]
+    if isinstance(value, str):
+        return redact_text(value)
+    return value
+
+
+def scan_for_secrets(value: Any) -> list[str]:
+    """Return detector names that still match *value* after serialization.
+
+    Used to assert an outbound payload or rendered page is clean. An empty
+    list means no known secret shape was found. Already-redacted hits are not
+    findings.
+    """
+    if isinstance(value, str):
+        text = value
+    else:
+        try:
+            text = json.dumps(value, default=str)
+        except Exception:
+            text = str(value)
+    findings: list[str] = []
+    for name, pattern in _DETECTORS:
+        for match in pattern.finditer(text):
+            if REDACTED in match.group(0):
+                continue
+            findings.append(name)
+            break
+    return findings
+
+
+def redaction_policy() -> dict[str, Any]:
+    """Machine-readable statement of the redaction rules (never secrets)."""
+    return {
+        "policy_version": 1,
+        "applies_to": [
+            "json_api_responses",
+            "rendered_html",
+            "server_logs",
+            "audit_records",
+        ],
+        "ordering": "shared gitea_audit pass, then console patterns",
+        "redact_before_persist": True,
+        "shared_rules": {
+            "source": "gitea_audit.redact",
+            "secret_key_hints": list(gitea_audit._SECRET_KEY_HINTS),
+            "secret_value_prefixes": list(gitea_audit._SECRET_VALUE_PREFIXES),
+            "urls": "credentials, secret query parameters, and real hosts redacted",
+        },
+        "console_rules": [
+            {"name": name, "pattern": pattern.pattern}
+            for name, pattern in _DETECTORS
+        ],
+        "placeholder": REDACTED,
+        "failure_mode": "fail closed — unredactable values become the placeholder",
+    }