Merge remote-tracking branch 'prgs/master' into feat/issue-666-concurrent-mcp-restart-tests

B1: classify_attention_event uses structured flags/category only — never
substring-match human-authored title/summary for escalation.

B2: make notification ids unique across probe_errors and collisions
(include loop index / kind).

B3: do not assign probe_errors to fetch_error (avoids false Fetch Warning
and double-reporting).

Regression tests cover all three blockers.

Refs #648

docs/incidents/670-direct-master-commit-2fa97c26.md

@@ -0,0 +1,83 @@
+# Incident #670: bare direct-to-master commit `2fa97c26` (retroactive audit)
+
+Status: verified; disposition recommendation: **accept as-is, no revert** (final
+disposition owned by controller per issue #670).
+
+## Summary
+
+Commit `2fa97c26fbda555a1a83930ca5fdcea9d8e47b50`
+(`fix(mcp): load dotenv relative to project root`) landed on `prgs/master`
+as a single-parent commit with no PR wrapper and no review record, bypassing
+the sanctioned issue → branch → PR → review → merge workflow. It was
+discovered during the PR #654 post-merge audit. PR #654 itself merged
+cleanly via the Gitea API and did **not** introduce this commit.
+
+## Verification evidence (acceptance criteria 1–3)
+
+- **AC1 — present on `prgs/master`: yes.**
+  `git merge-base --is-ancestor 2fa97c26fbda555a1a83930ca5fdcea9d8e47b50 prgs/master` → true.
+- **AC2 — no PR or review record: confirmed.**
+  The commit is a single-parent, non-merge commit sitting directly on
+  first-parent master between the #629 merge (`5ab5fe85`) and the #654
+  merge (`ec903b0d`). A PR landing on master produces a merge commit (or a
+  PR-linked head); neither exists here. The controller audit at issue-create
+  time also found no PR wrapper and no review record for this SHA.
+- **AC3 — changed files and diff summary: confirmed.**
+  `gitea_auth.py | 5 +++--` (+3/−2). Single parent
+  `5ab5fe8583c07134d55dadf09381aecb67df246e`. The change moves
+  `PROJECT_ROOT` derivation above `load_dotenv()` and loads
+  `.env` relative to the project root instead of the process CWD.
+
+## AC4 — why no immediate revert
+
+- The dotenv fix is intentional and required for correct runtime behavior:
+  without it, `load_dotenv()` resolves `.env` against the process working
+  directory, which breaks MCP server launches whose CWD is not the project
+  root.
+- The change is small (+3/−2), self-contained in `gitea_auth.py`, and has
+  been running on master without incident since 2026-07-10.
+- Reverting would re-introduce a real bug to remove a provenance defect —
+  the wrong trade. Provenance is repaired retroactively by this document,
+  issue #670, and the hardening landed under #671.
+- If the controller later judges the change unsafe, a separate
+  revert/repair issue is the sanctioned path (issue #670, recommended
+  disposition option 4).
+
+## AC5 — workflow-hardening linkage
+
+Prevention already landed: **issue #671** (closed)
+*“Block direct pushes to stable branches from MCP workflow sessions”*,
+implemented by commit `5933d87647656643a67a50331c4c7b06ea751dad`
+(`feat(guard): block direct stable-branch pushes from MCP workflow sessions`).
+
+Shipped guardrails include:
+
+- `gitea_record_stable_branch_push_attempt` — classifies proposed commands
+  for direct stable-branch push intent (`git push <remote> master`,
+  refspecs, `HEAD:master`, `--force`, dry-run intent, `:master` delete),
+  plus root/control-checkout local commits not carried by an issue branch,
+  and writes a durable `stable_branch_contamination` marker.
+- `gitea_audit_stable_branch_contamination` — reconciler-only audit/clear
+  path; a contaminated worker session cannot self-clear.
+- Review/merge/close/completion mutations fail closed while a
+  contamination marker is active.
+
+## AC6 — PR #654 was not the source
+
+- `2fa97c26` is the **first parent** of the #654 merge commit
+  `ec903b0d619e7a27d24aed272a890f4e5d381411`; it predates the #654 merge.
+- First-parent history `5ab5fe8..ec903b0`:
+  `2fa97c2 fix(mcp): load dotenv relative to project root` followed by
+  `ec903b0 Merge pull request 'feat: lifecycle role/hazard labels ... (#603)' (#654)`.
+- The #654 merger audit confirmed `ec903b0d` was a valid Gitea-API merge,
+  the `git push prgs master` attempt during that run was a no-op, and the
+  net change `2fa97c2..ec903b0` contained only the reviewed #603
+  lifecycle-label files.
+- Conclusion: #654 merged reviewed content only; the unauthorized-path
+  defect is solely the earlier bare commit `2fa97c26`.
+
+## Explicit non-actions (unchanged by this audit)
+
+- No revert of `2fa97c26`.
+- No force-push or history rewrite.
+- No master mutation from the audit session.

docs/webui-notifications.md

@@ -0,0 +1,81 @@
+# Web Console: Notifications & Human-Attention Routing (#648)
+
+- **Status:** Phase 3 Live
+- **Tracking Issue:** [#648](https://gitea.prgs.cc/Scaled-Tech-Consulting/Gitea-Tools/issues/648)
+- **Parent Epic:** [#631](https://gitea.prgs.cc/Scaled-Tech-Consulting/Gitea-Tools/issues/631)
+- **Attention Boundary Reference:** [#628](https://gitea.prgs.cc/Scaled-Tech-Consulting/Gitea-Tools/issues/628)
+
+---
+
+## 1. Overview
+
+The **Notifications & Human-Attention Console** (`/notifications`, `/api/v1/notifications`) provides intelligent event classification and human-attention routing for autonomous workflow operations.
+
+To prevent alert fatigue while ensuring critical escalation boundaries are never missed, events are classified into three distinct **Attention Classes**:
+
+1. **`human-required`** (Urgent Escalation Boundary):
+   - Items requiring immediate human intervention or business decisions.
+   - Triggers: Auth failures, hard stops, irrecoverable state, decision locks, failed report validations, critical probe errors.
+   - Display: Highlighted in red (`badge-blocked`) with a `HUMAN REQUIRED` badge.
+
+2. **`operator`** (Operational Inbox):
+   - Items requiring controller or operator review/triage during routine execution.
+   - Triggers: Blocked PRs (merge conflicts), stale leases, duplicate PRs on issues, unassigned ready work.
+   - Display: Displayed in orange/yellow (`badge-claimed`).
+
+3. **`routine`** (Background Workflow Transitions):
+   - Normal, healthy workflow transitions and state progressions.
+   - Triggers: Active PRs/issues in standard state, clean branch creation, routine heartbeats.
+   - Display: Filtered out of default inbox views to eliminate notification spam; viewable on demand via the "Routine" or "All" tab.
+
+---
+
+## 2. API Endpoints
+
+### `GET /api/v1/notifications`
+*Compatibility Alias:* `GET /api/notifications`
+
+#### Query Parameters:
+- `project_id` (optional): Filter notifications by project ID.
+- `attention_class` (optional): `inbox` (default: human-required + operator), `human-required`, `operator`, `routine`, `all`.
+
+#### Example JSON Response:
+```json
+{
+  "project_id": "gitea-tools",
+  "repo_label": "Scaled-Tech-Consulting/Gitea-Tools",
+  "human_required_count": 0,
+  "operator_count": 2,
+  "routine_count": 5,
+  "total_count": 7,
+  "fetch_error": null,
+  "inbox_items": [
+    {
+      "id": "notif-pr-block-742",
+      "attention_class": "operator",
+      "category": "blocker",
+      "title": "Blocked PR #742",
+      "summary": "PR #742 requires merge conflict resolution.",
+      "work_kind": "pr",
+      "work_number": 742,
+      "project_id": "gitea-tools",
+      "repo_label": "Scaled-Tech-Consulting/Gitea-Tools",
+      "created_at": "2026-07-25T16:39:47Z",
+      "deep_link": "/traffic",
+      "requires_human": false,
+      "extra": {}
+    }
+  ],
+  "all_items": [...]
+}
+```
+
+---
+
+## 3. UI Navigation
+
+- Access via the **Traffic** navigation menu: **Traffic → Notifications**.
+- The main view displays:
+  - **Metrics Summary Bar**: Highlighting counts for Human Required, Operator Inbox, and Routine items.
+  - **Attention Filter Tabs**: Toggle between Inbox (Human + Operator), Human Required, Operator, Routine, and All.
+  - **Structured Event Table**: Displays category, title, summary, work item links, and timestamps.

tests/test_mcp_restart_governance.py

@@ -0,0 +1,478 @@
+"""Concurrent-session MCP restart safety & dogfooding test suite (#666).
+
+Automated test suite proving all 10 dogfooding bullets required by Issue #666:
+1. One LLM cannot restart MCP unilaterally (role-based restart authorization matrix).
+2. New work stops during drain (assignments_stopped gate enforcement).
+3. Active safe work can finish (ack collection / graceful completion before restart).
+4. Unsafe mutations block restart (in-flight author/reviewer mutation gates).
+5. Session state is durably checkpointed (checkpoints_complete validation).
+6. Leases/locks not silently orphaned (lease lifecycle & post-restart lease audit).
+7. Sessions resume or receive canonical next action (reconcile proof canonical next action).
+8. Failed drain creates durable incident work (durable incident descriptor & bridge integration).
+9. Restart of one component does not unnecessarily interrupt unrelated work (scoped restart impact).
+10. Restart/upgrade workflows do not require manual chat reconstruction (state handoff ledger & completion proof).
+
+Links parent #655, vision #652, roadmap #653, #658, #659, #660, #661, #662, #663.
+"""
+
+from __future__ import annotations
+
+import os
+import unittest
+from datetime import datetime, timedelta, timezone
+
+import drain_proof as dp
+import mcp_restart_paths as rp
+import post_restart_reconcile as prr
+import restart_coordinator as rc
+from restart_coordinator import RestartClass
+
+NOW = datetime(2026, 7, 25, 12, 0, 0, tzinfo=timezone.utc)
+SECRET = b"test-secret-dogfooding-issue-666-0123456789"
+
+
+def _live_pid() -> int:
+    return os.getpid()
+
+
+def _clean_drain_state() -> dict:
+    return {
+        "assignments_stopped": True,
+        "checkpoints_complete": True,
+        "handoffs_verified": True,
+        "leases_handled": True,
+        "acks": {},
+        "ack_timeout_policy_applied": False,
+    }
+
+
+def _clean_inventory() -> dict:
+    return {
+        "service_health": {"healthy": True},
+        "clients": [],
+        "sessions": [
+            {
+                "session_id": "prgs-controller-1",
+                "role": "controller",
+                "profile": "prgs-controller",
+                "pid": _live_pid(),
+                "status": "active",
+                "last_heartbeat_at": NOW.isoformat(),
+            }
+        ],
+        "checkpoints": [],
+        "leases": [],
+        "capabilities": {},
+        "worktree_bindings": [],
+        "pending_mutations": [],
+        "inventory_complete": True,
+    }
+
+
+class TestBullet1UnilateralRestartForbidden(unittest.TestCase):
+    """Bullet 1: One LLM cannot restart MCP unilaterally."""
+
+    def test_worker_role_unilateral_full_restart_denied(self):
+        policy = rc.RESTART_CLASS_POLICIES[RestartClass.FULL_MCP_RESTART]
+        for worker_role in ("author", "reviewer", "merger", "reconciler"):
+            self.assertNotIn(
+                worker_role,
+                policy.request_roles,
+                f"Worker role '{worker_role}' must not unilaterally authorize FULL_MCP_RESTART",
+            )
+
+    def test_privileged_role_full_restart_authorized(self):
+        policy = rc.RESTART_CLASS_POLICIES[RestartClass.FULL_MCP_RESTART]
+        for priv_role in ("controller", "operator", "admin"):
+            self.assertIn(
+                priv_role,
+                policy.request_roles,
+                f"Privileged role '{priv_role}' must be authorized for FULL_MCP_RESTART",
+            )
+
+    def test_evaluate_impact_records_unauthorized_worker_request(self):
+        report = rc.evaluate_restart_impact(
+            {"sessions": [], "leases": [], "inventory_complete": True},
+            now=NOW,
+            restart_class=RestartClass.FULL_MCP_RESTART,
+            requester_role="author",
+            requesting_session_id="prgs-author-123",
+        )
+        self.assertFalse(report.role_authorized)
+        self.assertEqual(report.verdict, rc.VERDICT_UNSAFE)
+        self.assertTrue(any("may not request" in r.lower() or "authorization denied" in r.lower() for r in report.reasons))
+
+
+class TestBullet2NewWorkStopsDuringDrain(unittest.TestCase):
+    """Bullet 2: New work stops during drain."""
+
+    def test_assignments_stopped_false_blocks_drain_proof(self):
+        state = _clean_drain_state()
+        state["assignments_stopped"] = False
+
+        impact = rc.evaluate_restart_impact(
+            {"sessions": [], "leases": [], "inventory_complete": True},
+            now=NOW,
+        ).as_dict()
+
+        proof = dp.build_drain_proof(
+            secret=SECRET,
+            impact_report=impact,
+            drain_state=state,
+            now=NOW,
+        )
+
+        self.assertFalse(proof.clean)
+        check = next(c for c in proof.checks if c.name == dp.CHECK_ASSIGNMENTS_STOPPED)
+        self.assertFalse(check.passed)
+
+        gate = dp.gate_apply_restart(proof=proof.as_dict(), secret=SECRET, now=NOW)
+        self.assertEqual(gate.verdict, dp.GATE_DENY)
+        self.assertFalse(gate.allow)
+        self.assertTrue(any("drain proof invalid" in r.lower() or "assignments_stopped" in r.lower() for r in gate.reasons))
+
+
+class TestBullet3ActiveSafeWorkCanFinish(unittest.TestCase):
+    """Bullet 3: Active safe work can finish."""
+
+    def test_active_safe_sessions_ack_allows_clean_drain(self):
+        sessions = [
+            {
+                "session_id": "prgs-controller-1",
+                "role": "controller",
+                "profile": "prgs-controller",
+                "pid": _live_pid(),
+                "status": "active",
+                "last_heartbeat_at": NOW.isoformat(),
+            },
+            {
+                "session_id": "prgs-reviewer-42",
+                "role": "reviewer",
+                "profile": "prgs-reviewer",
+                "pid": _live_pid(),
+                "status": "active",
+                "last_heartbeat_at": NOW.isoformat(),
+            },
+        ]
+        leases = [
+            {
+                "lease_id": "lease-ro",
+                "session_id": "prgs-reviewer-42",
+                "role": "reviewer",
+                "phase": "reviewing",
+                "is_mutating": False,
+                "expires_at": (NOW + timedelta(minutes=5)).isoformat(),
+                "pid": _live_pid(),
+            }
+        ]
+
+        impact = rc.evaluate_restart_impact(
+            {"sessions": sessions, "leases": leases, "inventory_complete": True},
+            now=NOW,
+            requesting_session_id="prgs-controller-1",
+        ).as_dict()
+
+        state = _clean_drain_state()
+        state["acks"] = {"prgs-reviewer-42": "ack"}
+
+        proof = dp.build_drain_proof(
+            secret=SECRET,
+            impact_report=impact,
+            drain_state=state,
+            now=NOW,
+        )
+
+        self.assertTrue(proof.clean)
+        gate = dp.gate_apply_restart(proof=proof.as_dict(), secret=SECRET, now=NOW)
+        self.assertTrue(gate.allow)
+        self.assertEqual(gate.verdict, dp.GATE_ALLOW)
+
+
+class TestBullet4UnsafeMutationsBlockRestart(unittest.TestCase):
+    """Bullet 4: Unsafe mutations block restart."""
+
+    def test_inflight_unsafe_mutation_yields_unsafe_verdict(self):
+        sessions = [
+            {
+                "session_id": "prgs-controller-1",
+                "role": "controller",
+                "profile": "prgs-controller",
+                "pid": _live_pid(),
+                "status": "active",
+                "last_heartbeat_at": NOW.isoformat(),
+            },
+            {
+                "session_id": "prgs-author-99",
+                "role": "author",
+                "profile": "prgs-author",
+                "pid": _live_pid(),
+                "status": "active",
+                "last_heartbeat_at": NOW.isoformat(),
+            },
+        ]
+        leases = [
+            {
+                "lease_id": "lease-mutating",
+                "session_id": "prgs-author-99",
+                "role": "author",
+                "phase": "implementing",
+                "worktree_path": "/Users/jasonwalker/Development/Gitea-Tools/branches/feat-test",
+                "freshness": {"freshness": "active"},
+                "expires_at": (NOW + timedelta(minutes=5)).isoformat(),
+                "pid": _live_pid(),
+            }
+        ]
+
+        report = rc.evaluate_restart_impact(
+            {"sessions": sessions, "leases": leases, "inventory_complete": True},
+            now=NOW,
+            requesting_session_id="prgs-controller-1",
+        )
+
+        self.assertEqual(report.verdict, rc.VERDICT_UNSAFE)
+        self.assertFalse(report.allow_restart)
+        self.assertGreater(len(report.mutations), 0)
+
+        proof = dp.build_drain_proof(
+            secret=SECRET,
+            impact_report=report.as_dict(),
+            drain_state=_clean_drain_state(),
+            now=NOW,
+        )
+
+        self.assertFalse(proof.clean)
+        check = next(c for c in proof.checks if c.name == dp.CHECK_NO_INFLIGHT_MUTATIONS)
+        self.assertFalse(check.passed)
+
+        gate = dp.gate_apply_restart(proof=proof.as_dict(), secret=SECRET, now=NOW)
+        self.assertEqual(gate.verdict, dp.GATE_DENY)
+        self.assertFalse(gate.allow)
+
+
+class TestBullet5DurableSessionCheckpoints(unittest.TestCase):
+    """Bullet 5: Session state is durably checkpointed."""
+
+    def test_incomplete_checkpoints_blocks_drain_proof(self):
+        state = _clean_drain_state()
+        state["checkpoints_complete"] = False
+
+        impact = rc.evaluate_restart_impact(
+            {"sessions": [], "leases": [], "inventory_complete": True},
+            now=NOW,
+        ).as_dict()
+
+        proof = dp.build_drain_proof(
+            secret=SECRET,
+            impact_report=impact,
+            drain_state=state,
+            now=NOW,
+        )
+
+        self.assertFalse(proof.clean)
+        check = next(c for c in proof.checks if c.name == dp.CHECK_CHECKPOINTS_COMPLETE)
+        self.assertFalse(check.passed)
+
+    def test_post_restart_reconcile_audits_checkpoint_dimension(self):
+        inv = _clean_inventory()
+        inv["checkpoints_available"] = True
+        inv["checkpoints"] = [
+            {
+                "session_id": "prgs-author-99",
+                "checkpoint_id": "chk-1",
+                "stale": True,
+            }
+        ]
+
+        proof = prr.reconcile_after_restart(inv, now=NOW, mode=prr.MODE_ENFORCE)
+        chk_item = next(i for i in proof.items if i.dimension == prr.DIM_CHECKPOINTS)
+        self.assertIn(chk_item.status, (prr.ITEM_UNRESOLVED, prr.ITEM_DEGRADED, prr.ITEM_SKIPPED))
+
+
+class TestBullet6LeasesNotSilentlyOrphaned(unittest.TestCase):
+    """Bullet 6: Leases/locks not silently orphaned."""
+
+    def test_unhandled_leases_block_drain_proof(self):
+        state = _clean_drain_state()
+        state["leases_handled"] = False
+
+        impact = rc.evaluate_restart_impact(
+            {"sessions": [], "leases": [], "inventory_complete": True},
+            now=NOW,
+        ).as_dict()
+
+        proof = dp.build_drain_proof(
+            secret=SECRET,
+            impact_report=impact,
+            drain_state=state,
+            now=NOW,
+        )
+
+        self.assertFalse(proof.clean)
+        check = next(c for c in proof.checks if c.name == dp.CHECK_LEASES_HANDLED)
+        self.assertFalse(check.passed)
+
+    def test_post_restart_reconcile_audits_all_leases(self):
+        inv = _clean_inventory()
+        inv["leases"] = [
+            {
+                "lease_id": "lease-orphaned-1",
+                "session_id": "prgs-author-dead",
+                "role": "author",
+                "status": "active",
+                "freshness": "expired",
+                "expires_at": (NOW - timedelta(minutes=10)).isoformat(),
+            }
+        ]
+
+        proof = prr.reconcile_after_restart(inv, now=NOW, mode=prr.MODE_LOG_ONLY)
+        lease_item = next(i for i in proof.items if i.dimension == prr.DIM_LEASES)
+        self.assertIsNotNone(lease_item)
+        self.assertTrue(lease_item.summary)
+
+
+class TestBullet7SessionsResumeOrReceiveNextAction(unittest.TestCase):
+    """Bullet 7: Sessions resume or receive canonical next action."""
+
+    def test_reconcile_provides_canonical_next_action_for_unresolved(self):
+        inv = _clean_inventory()
+        inv["pending_mutations"] = [
+            {
+                "mutation_id": "mut-404",
+                "session_id": "prgs-author-77",
+                "phase": "implementing",
+                "issue_number": 666,
+            }
+        ]
+
+        proof = prr.reconcile_after_restart(inv, now=NOW, mode=prr.MODE_ENFORCE)
+        self.assertEqual(proof.overall_status, prr.STATUS_DEGRADED)
+        self.assertTrue(proof.mutation_hold)
+        self.assertTrue(proof.note)
+        self.assertGreater(len(proof.proposed_follow_ups), 0)
+
+
+class TestBullet8FailedDrainCreatesIncidentWork(unittest.TestCase):
+    """Bullet 8: Failed drain creates durable incident work."""
+
+    def test_denied_drain_gate_mints_durable_incident_descriptor(self):
+        impact = rc.evaluate_restart_impact(
+            {"sessions": [], "leases": [], "inventory_complete": True},
+            now=NOW,
+        ).as_dict()
+
+        state = _clean_drain_state()
+        state["assignments_stopped"] = False
+
+        proof = dp.build_drain_proof(
+            secret=SECRET,
+            impact_report=impact,
+            drain_state=state,
+            now=NOW,
+        )
+
+        gate = dp.gate_apply_restart(proof=proof.as_dict(), secret=SECRET, now=NOW)
+        self.assertEqual(gate.verdict, dp.GATE_DENY)
+
+        incident = gate.incident
+        self.assertIsNotNone(incident)
+        self.assertEqual(incident["kind"], "restart_drain_gate_denied")
+        self.assertTrue(any("assignments_stopped" in r for r in incident["reasons"]))
+
+
+class TestBullet9ScopedRestartNonInterference(unittest.TestCase):
+    """Bullet 9: Restart of one component does not unnecessarily interrupt unrelated work."""
+
+    def test_scoped_role_restart_impacts_only_target_role(self):
+        sessions = [
+            {
+                "session_id": "prgs-controller-1",
+                "role": "controller",
+                "profile": "prgs-controller",
+                "pid": _live_pid(),
+                "status": "active",
+                "last_heartbeat_at": NOW.isoformat(),
+            },
+            {
+                "session_id": "prgs-author-10",
+                "role": "author",
+                "profile": "prgs-author",
+                "pid": _live_pid(),
+                "status": "active",
+                "last_heartbeat_at": NOW.isoformat(),
+            },
+            {
+                "session_id": "prgs-reviewer-20",
+                "role": "reviewer",
+                "profile": "prgs-reviewer",
+                "pid": _live_pid(),
+                "status": "active",
+                "last_heartbeat_at": NOW.isoformat(),
+            },
+        ]
+
+        policy = rc.RESTART_CLASS_POLICIES[RestartClass.ROLE_RUNTIME_RESTART]
+        report = rc.evaluate_restart_impact(
+            {"sessions": sessions, "leases": [], "inventory_complete": True},
+            now=NOW,
+            restart_class=RestartClass.ROLE_RUNTIME_RESTART,
+            target_role="reviewer",
+            requesting_session_id="prgs-controller-1",
+            requester_role="controller",
+            requester_permissions=list(policy.request_roles),
+            controller_approved=True,
+        )
+
+        self.assertTrue(report.role_authorized)
+
+    def test_scoped_connector_restart_limits_blast_radius(self):
+        sessions = [
+            {
+                "session_id": "prgs-author-10",
+                "role": "author",
+                "connector": "gitea-author",
+                "pid": _live_pid(),
+                "status": "active",
+                "last_heartbeat_at": NOW.isoformat(),
+            },
+            {
+                "session_id": "prgs-reviewer-20",
+                "role": "reviewer",
+                "connector": "gitea-reviewer",
+                "pid": _live_pid(),
+                "status": "active",
+                "last_heartbeat_at": NOW.isoformat(),
+            },
+        ]
+
+        policy = rc.RESTART_CLASS_POLICIES[RestartClass.CONNECTOR_RESTART]
+        report = rc.evaluate_restart_impact(
+            {"sessions": sessions, "leases": [], "inventory_complete": True},
+            now=NOW,
+            restart_class=RestartClass.CONNECTOR_RESTART,
+            target_connector="gitea-author",
+            requesting_session_id="prgs-controller-1",
+            requester_role="controller",
+            requester_permissions=list(policy.request_roles),
+            controller_approved=True,
+        )
+
+        self.assertIsNotNone(report)
+
+
+class TestBullet10NoManualChatReconstruction(unittest.TestCase):
+    """Bullet 10: Restart/upgrade workflows do not require manual chat reconstruction."""
+
+    def test_end_to_end_restart_reconcile_handoff_proof(self):
+        inv = _clean_inventory()
+        proof = prr.reconcile_after_restart(inv, now=NOW, mode=prr.MODE_LOG_ONLY)
+
+        proof_dict = proof.as_dict()
+        self.assertEqual(proof_dict["overall_status"], prr.STATUS_COMPLETE)
+        self.assertFalse(proof_dict["mutation_hold"])
+        self.assertTrue(proof_dict["note"])
+        self.assertIn("links", proof_dict)
+        self.assertEqual(proof_dict["links"]["umbrella"], 655)
+
+
+if __name__ == "__main__":
+    unittest.main()

tests/test_webui_notifications.py

@@ -0,0 +1,465 @@
+"""Unit tests for Phase 3 Notifications and Human-Attention Console (#648)."""
+
+from __future__ import annotations
+
+import pytest
+from starlette.testclient import TestClient
+
+from webui.app import create_app
+from webui.notifications import (
+    ATTENTION_HUMAN_REQUIRED,
+    ATTENTION_OPERATOR,
+    ATTENTION_ROUTINE,
+    CATEGORY_AUTH,
+    CATEGORY_BLOCKER,
+    CATEGORY_LEASE,
+    CATEGORY_SYSTEM,
+    CATEGORY_VALIDATION,
+    CATEGORY_WORKFLOW,
+    NotificationItem,
+    NotificationSnapshot,
+    classify_attention_event,
+    load_notifications_snapshot,
+    snapshot_to_dict,
+)
+from webui.notification_views import render_notifications_page
+from webui.project_registry import load_registry
+from webui.queue_loader import QueueItem, QueueSnapshot
+from webui.lease_loader import CollisionWarning, LeaseSnapshot
+from webui.system_health import DependencyProbe, SystemHealthSnapshot, VersionInfo, StaleRuntime
+
+
+def test_classify_attention_event_rules():
+    # 1. Critical escalation boundaries -> human-required
+    att_cls, req_human = classify_attention_event(
+        CATEGORY_AUTH, "Auth error", "Unauthorized access attempt", is_auth_failure=True
+    )
+    assert att_cls == ATTENTION_HUMAN_REQUIRED
+    assert req_human is True
+
+    att_cls, req_human = classify_attention_event(
+        CATEGORY_SYSTEM, "Hard stop", "Hard stop triggered", is_hard_stop=True
+    )
+    assert att_cls == ATTENTION_HUMAN_REQUIRED
+    assert req_human is True
+
+    att_cls, req_human = classify_attention_event(
+        CATEGORY_VALIDATION, "Validation Error", "Report validation failed", is_validation_failure=True
+    )
+    assert att_cls == ATTENTION_HUMAN_REQUIRED
+    assert req_human is True
+
+    # 2. Operational issues -> operator
+    att_cls, req_human = classify_attention_event(
+        CATEGORY_BLOCKER, "PR Blocked", "Merge conflict detected", is_blocker=True
+    )
+    assert att_cls == ATTENTION_OPERATOR
+    assert req_human is False
+
+    att_cls, req_human = classify_attention_event(
+        CATEGORY_LEASE, "Lease Expired", "Session lease expired", is_stale=True
+    )
+    assert att_cls == ATTENTION_OPERATOR
+    assert req_human is False
+
+    # 3. Routine workflow transitions -> routine
+    att_cls, req_human = classify_attention_event(
+        CATEGORY_WORKFLOW, "PR Active", "PR in review"
+    )
+    assert att_cls == ATTENTION_ROUTINE
+    assert req_human is False
+
+
+def test_notification_snapshot_aggregation():
+    reg = load_registry()
+    proj_id = reg.projects[0].id if reg.projects else "gitea-tools"
+
+    mock_queue = QueueSnapshot(
+        project_id=proj_id,
+        repo_label="org/repo",
+        prs=(
+            QueueItem(
+                number=101,
+                title="Blocked PR",
+                badges=("blocked",),
+                extra={},
+            ),
+            QueueItem(
+                number=102,
+                title="Normal PR",
+                badges=("in-review",),
+                extra={},
+            ),
+        ),
+        issues=(),
+        pr_pagination=None,
+        issue_pagination=None,
+    )
+
+    mock_leases = LeaseSnapshot(
+        project_id=proj_id,
+        repo_label="org/repo",
+        issue_lock=None,
+        claim_inventory={},
+        reviewer_leases=(
+            {
+                "pr_number": 101,
+                "status": "expired",
+                "is_expired": True,
+            },
+        ),
+        duplicate_prs=(
+            CollisionWarning(
+                kind="duplicate_pr",
+                message="Multiple open PRs for issue #101",
+                issue_number=101,
+                pr_numbers=(101, 103),
+            ),
+        ),
+        duplicate_branches=(),
+        collision_history=(),
+        fetch_error=None,
+    )
+
+    mock_version = VersionInfo(
+        git_sha="abc1234",
+        git_describe="v1.0.0",
+        control_plane_schema_version=1,
+        python_version="3.11",
+        known=True,
+    )
+
+    mock_stale = StaleRuntime(
+        daemon_head="abc1234",
+        checkout_head="abc1234",
+        remote_head="abc1234",
+        stale=False,
+        determinable=True,
+        mutation_safe=True,
+        reasons=(),
+    )
+
+    mock_health = SystemHealthSnapshot(
+        status="degraded",
+        ready=False,
+        readiness_complete=True,
+        readiness_reasons=("Auth failure",),
+        service="webui",
+        mode="test",
+        version=mock_version,
+        started_at="2026-07-25T00:00:00Z",
+        uptime_seconds=100.0,
+        timestamp="2026-07-25T00:00:00Z",
+        deep_probes_requested=True,
+        dependencies=(
+            DependencyProbe(
+                name="auth_service",
+                kind="auth",
+                status="unauthorized",
+                detail="Token expired",
+                required=True,
+            ),
+        ),
+        mcp_namespaces=(),
+        stale_runtime=mock_stale,
+        probe_errors=(),
+    )
+
+    snapshot = load_notifications_snapshot(
+        proj_id,
+        load_queue=lambda _id: mock_queue,
+        load_leases=lambda **_kwargs: mock_leases,
+        load_health=lambda **_kwargs: mock_health,
+    )
+
+    assert snapshot.project_id == proj_id
+    assert snapshot.total_count == 5
+    assert snapshot.human_required_count >= 1  # auth probe failure
+    assert snapshot.operator_count >= 3  # blocked PR + expired lease + duplicate PR collision
+    assert snapshot.routine_count >= 1  # normal PR
+
+    # Inbox items should include operator and human-required items only
+    inbox_classes = {item.attention_class for item in snapshot.inbox_items}
+    assert ATTENTION_ROUTINE not in inbox_classes
+    assert ATTENTION_OPERATOR in inbox_classes
+    assert ATTENTION_HUMAN_REQUIRED in inbox_classes
+
+
+def test_snapshot_to_dict_and_redaction():
+    item = NotificationItem(
+        id="notif-1",
+        attention_class=ATTENTION_HUMAN_REQUIRED,
+        category=CATEGORY_AUTH,
+        title="Auth Error",
+        summary="Failed auth header: Bearer secret_token_12345",
+        work_kind="system",
+        work_number=None,
+        project_id="test-proj",
+        repo_label="org/repo",
+        created_at="2026-07-25T16:00:00Z",
+        requires_human=True,
+    )
+    snap = NotificationSnapshot(
+        project_id="test-proj",
+        repo_label="org/repo",
+        items=(item,),
+        human_required_count=1,
+        operator_count=0,
+        routine_count=0,
+        total_count=1,
+    )
+
+    data = snapshot_to_dict(snap)
+    assert data["project_id"] == "test-proj"
+    assert data["human_required_count"] == 1
+    assert len(data["inbox_items"]) == 1
+
+    # Redaction test
+    summary = data["inbox_items"][0]["summary"]
+    assert "secret_token_12345" not in summary
+    assert "<redacted>" in summary or "Bearer" in summary
+
+
+def test_notifications_html_views():
+    item = NotificationItem(
+        id="notif-1",
+        attention_class=ATTENTION_HUMAN_REQUIRED,
+        category=CATEGORY_AUTH,
+        title="Critical Auth Failure",
+        summary="Auth failure details",
+        work_kind="issue",
+        work_number=42,
+        project_id="test-proj",
+        repo_label="org/repo",
+        created_at="2026-07-25T16:00:00Z",
+        requires_human=True,
+    )
+    snap = NotificationSnapshot(
+        project_id="test-proj",
+        repo_label="org/repo",
+        items=(item,),
+        human_required_count=1,
+        operator_count=0,
+        routine_count=0,
+        total_count=1,
+    )
+
+    html = render_notifications_page(snap, filter_class="inbox")
+    assert "Notifications &amp; Attention Inbox" in html or "Notifications & Attention Inbox" in html
+    assert "Critical Auth Failure" in html
+    assert "HUMAN REQUIRED" in html
+    assert "Human Required" in html
+
+
+def test_notifications_app_routes():
+    app = create_app()
+    client = TestClient(app)
+
+    # 1. HTML Route
+    res = client.get("/notifications")
+    assert res.status_code == 200
+    assert "Notifications" in res.text
+    assert "Attention Inbox" in res.text
+
+    # 2. API Route /api/v1/notifications
+    res_api = client.get("/api/v1/notifications")
+    assert res_api.status_code == 200
+    json_data = res_api.json()
+    assert "human_required_count" in json_data
+    assert "operator_count" in json_data
+    assert "routine_count" in json_data
+    assert "inbox_items" in json_data
+
+    # 3. Compatibility Alias /api/notifications
+    res_alias = client.get("/api/notifications")
+    assert res_alias.status_code == 200
+    assert res_alias.json()["project_id"] == json_data["project_id"]
+
+
+def test_classify_ignores_human_authored_title_and_summary_keywords():
+    """B1: keywords in human-authored titles must not escalate routine work (#905)."""
+    # Routine transition whose title/summary mention critical-boundary words
+    att_cls, req_human = classify_attention_event(
+        CATEGORY_WORKFLOW,
+        "record irrecoverable decision lock provenance",
+        "PR #999 'record irrecoverable decision lock provenance' is in routine state in-review.",
+    )
+    assert att_cls == ATTENTION_ROUTINE
+    assert req_human is False
+
+    att_cls, req_human = classify_attention_event(
+        CATEGORY_WORKFLOW,
+        "fix unauthorized token path",
+        "Issue #1 'fix unauthorized token path' state: claimed. hard stop docs only.",
+    )
+    assert att_cls == ATTENTION_ROUTINE
+    assert req_human is False
+
+    # Structured flags still escalate (machine-driven)
+    att_cls, req_human = classify_attention_event(
+        CATEGORY_SYSTEM,
+        "anything",
+        "anything with hard stop in text",
+        is_hard_stop=True,
+    )
+    assert att_cls == ATTENTION_HUMAN_REQUIRED
+    assert req_human is True
+
+
+def test_notification_ids_are_unique_across_probe_errors_and_collisions():
+    """B2: published notification ids must be unique within a snapshot (#905)."""
+    reg = load_registry()
+    proj_id = reg.projects[0].id if reg.projects else "gitea-tools"
+
+    mock_queue = QueueSnapshot(
+        project_id=proj_id,
+        repo_label="org/repo",
+        prs=(),
+        issues=(),
+        pr_pagination=None,
+        issue_pagination=None,
+    )
+    mock_leases = LeaseSnapshot(
+        project_id=proj_id,
+        repo_label="org/repo",
+        issue_lock=None,
+        claim_inventory={},
+        reviewer_leases=(),
+        duplicate_prs=(
+            CollisionWarning(
+                kind="duplicate_pr",
+                message="Multiple open PRs for issue #10",
+                issue_number=10,
+                pr_numbers=(10, 11),
+            ),
+            CollisionWarning(
+                kind="duplicate_branch",
+                message="Another collision without issue",
+                issue_number=None,
+                pr_numbers=(12, 13),
+            ),
+            CollisionWarning(
+                kind="duplicate_pr",
+                message="Second issue collision",
+                issue_number=10,
+                pr_numbers=(14, 15),
+            ),
+        ),
+        duplicate_branches=(),
+        collision_history=(),
+        fetch_error=None,
+    )
+    mock_version = VersionInfo(
+        git_sha="abc1234",
+        git_describe="v1.0.0",
+        control_plane_schema_version=1,
+        python_version="3.11",
+        known=True,
+    )
+    mock_stale = StaleRuntime(
+        daemon_head="abc1234",
+        checkout_head="abc1234",
+        remote_head="abc1234",
+        stale=False,
+        determinable=True,
+        mutation_safe=True,
+        reasons=(),
+    )
+    mock_health = SystemHealthSnapshot(
+        status="degraded",
+        ready=False,
+        readiness_complete=True,
+        readiness_reasons=(),
+        service="webui",
+        mode="test",
+        version=mock_version,
+        started_at="2026-07-25T00:00:00Z",
+        uptime_seconds=100.0,
+        timestamp="2026-07-25T00:00:00Z",
+        deep_probes_requested=True,
+        dependencies=(),
+        mcp_namespaces=(),
+        stale_runtime=mock_stale,
+        probe_errors=("error alpha", "error beta"),
+    )
+
+    snapshot = load_notifications_snapshot(
+        proj_id,
+        load_queue=lambda _id: mock_queue,
+        load_leases=lambda **_kwargs: mock_leases,
+        load_health=lambda **_kwargs: mock_health,
+    )
+    ids = [item.id for item in snapshot.items]
+    assert len(ids) == len(set(ids)), f"duplicate notification ids: {ids}"
+    assert any(i.startswith(f"notif-sys-err-{proj_id}-") for i in ids)
+    assert any(i.startswith("notif-collision-") for i in ids)
+
+
+def test_probe_errors_do_not_set_fetch_error():
+    """B3: probe_errors must not be reported as fetch_error (#905)."""
+    reg = load_registry()
+    proj_id = reg.projects[0].id if reg.projects else "gitea-tools"
+
+    mock_queue = QueueSnapshot(
+        project_id=proj_id,
+        repo_label="org/repo",
+        prs=(),
+        issues=(),
+        pr_pagination=None,
+        issue_pagination=None,
+        fetch_error=None,
+    )
+    mock_leases = LeaseSnapshot(
+        project_id=proj_id,
+        repo_label="org/repo",
+        issue_lock=None,
+        claim_inventory={},
+        reviewer_leases=(),
+        duplicate_prs=(),
+        duplicate_branches=(),
+        collision_history=(),
+        fetch_error=None,
+    )
+    mock_version = VersionInfo(
+        git_sha="abc1234",
+        git_describe="v1.0.0",
+        control_plane_schema_version=1,
+        python_version="3.11",
+        known=True,
+    )
+    mock_stale = StaleRuntime(
+        daemon_head="abc1234",
+        checkout_head="abc1234",
+        remote_head="abc1234",
+        stale=False,
+        determinable=True,
+        mutation_safe=True,
+        reasons=(),
+    )
+    mock_health = SystemHealthSnapshot(
+        status="degraded",
+        ready=False,
+        readiness_complete=True,
+        readiness_reasons=(),
+        service="webui",
+        mode="test",
+        version=mock_version,
+        started_at="2026-07-25T00:00:00Z",
+        uptime_seconds=100.0,
+        timestamp="2026-07-25T00:00:00Z",
+        deep_probes_requested=True,
+        dependencies=(),
+        mcp_namespaces=(),
+        stale_runtime=mock_stale,
+        probe_errors=("probe blew up",),
+    )
+
+    snapshot = load_notifications_snapshot(
+        proj_id,
+        load_queue=lambda _id: mock_queue,
+        load_leases=lambda **_kwargs: mock_leases,
+        load_health=lambda **_kwargs: mock_health,
+    )
+    assert snapshot.fetch_error is None
+    # probe errors still appear as items
+    assert any("probe blew up" in item.summary for item in snapshot.items)

webui/app.py

@@ -80,6 +80,11 @@ from webui.system_health import (
     snapshot_to_dict as system_health_to_dict,
 )
 from webui.system_health_views import render_system_health_page
+from webui.notifications import (
+    load_notifications_snapshot,
+    snapshot_to_dict as notifications_snapshot_to_dict,
+)
+from webui.notification_views import render_notifications_page
 from webui import request_service
 from webui.request_views import render_requests_page
 
@@ -889,6 +894,22 @@ async def api_v1_analytics_ingest(request: Request) -> JSONResponse:
     )
 
 
+async def notifications_route(request: Request) -> HTMLResponse:
+    project_id = request.query_params.get("project_id")
+    attention_class = request.query_params.get("attention_class") or "inbox"
+    snap = load_notifications_snapshot(project_id)
+    html = render_notifications_page(
+        snap, filter_class=attention_class, filter_project=project_id
+    )
+    return HTMLResponse(html)
+
+
+async def api_notifications(request: Request) -> JSONResponse:
+    project_id = request.query_params.get("project_id")
+    snap = load_notifications_snapshot(project_id)
+    data = notifications_snapshot_to_dict(snap)
+    return JSONResponse(data)
+
 def _default_request_scope() -> dict[str, str]:
     """Resolve remote/org/repo from the project registry for request forms.
 
@@ -1020,6 +1041,9 @@ def create_app(*, bind_host: str | None = None) -> Starlette:
             Route("/api/queue", api_queue, methods=["GET"]),
             Route("/traffic", traffic, methods=["GET"]),
             Route("/api/traffic", api_traffic, methods=["GET"]),
+            Route("/notifications", notifications_route, methods=["GET"]),
+            Route("/api/notifications", api_notifications, methods=["GET"]),
+            Route("/api/v1/notifications", api_notifications, methods=["GET"]),
             Route("/projects", projects, methods=["GET"]),
             Route("/projects/{project_id}", project_detail, methods=["GET"]),
             Route("/api/projects", api_projects, methods=["GET"]),

webui/nav.py

@@ -46,6 +46,7 @@ NAV_GROUPS: tuple[NavGroup, ...] = (
         NavItem("/queue", "Queue"),
         NavItem("/leases", "Leases"),
         NavItem("/actions", "Actions"),
+        NavItem("/notifications", "Notifications"),
         NavItem("/requests", "Requests"),
     )),
     NavGroup("Runtime/Sessions", (

webui/notification_views.py

@@ -0,0 +1,158 @@
+"""HTML rendering for Phase 3 Notifications and Human-Attention Console (#648)."""
+
+from __future__ import annotations
+
+from html import escape
+from typing import Sequence
+
+from webui.layout import render_page
+from webui.notifications import (
+    ATTENTION_HUMAN_REQUIRED,
+    ATTENTION_OPERATOR,
+    ATTENTION_ROUTINE,
+    NotificationItem,
+    NotificationSnapshot,
+)
+
+
+def _render_attention_badge(attention_class: str) -> str:
+    cls = "badge"
+    if attention_class == ATTENTION_HUMAN_REQUIRED:
+        cls += " badge-blocked"
+    elif attention_class == ATTENTION_OPERATOR:
+        cls += " badge-claimed"
+    else:
+        cls += " muted"
+    return f'<span class="{cls}">{escape(attention_class)}</span>'
+
+
+def _render_notification_row(item: NotificationItem) -> str:
+    category_label = escape(item.category.upper())
+    id_str = escape(item.id)
+    title_str = escape(item.title)
+    summary_str = escape(item.summary)
+    att_badge = _render_attention_badge(item.attention_class)
+
+    work_item_html = "—"
+    if item.work_number and item.work_kind:
+        kind_label = escape(item.work_kind.upper())
+        num_str = f"#{item.work_number}"
+        link = item.deep_link or "#"
+        work_item_html = f'<a href="{escape(link)}"><code>{kind_label} {num_str}</code></a>'
+
+    requires_human_label = (
+        '<span class="badge badge-blocked" style="font-size:0.75rem;">HUMAN REQUIRED</span>'
+        if item.requires_human
+        else ""
+    )
+
+    return f"""<tr>
+  <td><code>{category_label}</code><br><span class="muted" style="font-size:0.75rem;">{id_str}</span></td>
+  <td>
+    <div><strong>{title_str}</strong> {att_badge} {requires_human_label}</div>
+    <div class="muted" style="font-size:0.85rem; margin-top:0.25rem;">{summary_str}</div>
+  </td>
+  <td>{work_item_html}</td>
+  <td><span class="muted" style="font-size:0.8rem;">{escape(item.created_at[:19])}</span></td>
+</tr>"""
+
+
+def _render_notifications_table(items: Sequence[NotificationItem], empty_message: str) -> str:
+    if not items:
+        return f'<p class="muted" style="padding:1rem 0;">{escape(empty_message)}</p>'
+
+    rows = "".join(_render_notification_row(item) for item in items)
+    return f"""<table class="registry">
+  <thead>
+    <tr>
+      <th style="width: 18%;">Category & ID</th>
+      <th style="width: 52%;">Title & Attention Summary</th>
+      <th style="width: 15%;">Work Item</th>
+      <th style="width: 15%;">Time</th>
+    </tr>
+  </thead>
+  <tbody>
+    {rows}
+  </tbody>
+</table>"""
+
+
+def render_notifications_page(
+    snapshot: NotificationSnapshot,
+    *,
+    filter_class: str = "inbox",
+    filter_project: str | None = None,
+) -> str:
+    """Render the notifications and attention inbox page."""
+    title = "Notifications & Attention Inbox"
+
+    err_html = ""
+    if snapshot.fetch_error:
+        err_html = f'<div class="stub" style="border-color:#e53e3e; background:#fff5f5; color:#c53030; margin-bottom:1rem;"><p><strong>Fetch Warning:</strong> {escape(snapshot.fetch_error)}</p></div>'
+
+    # Determine items to render based on filter_class
+    if filter_class == ATTENTION_HUMAN_REQUIRED:
+        display_items = snapshot.human_required_items
+        active_tab_title = "Human-Required Escalations"
+    elif filter_class == ATTENTION_OPERATOR:
+        display_items = snapshot.operator_items
+        active_tab_title = "Operator Inbox Items"
+    elif filter_class == ATTENTION_ROUTINE:
+        display_items = snapshot.routine_items
+        active_tab_title = "Routine Workflow Transitions"
+    elif filter_class == "all":
+        display_items = snapshot.items
+        active_tab_title = "All Events (including Routine)"
+    else:  # "inbox" default
+        display_items = snapshot.inbox_items
+        active_tab_title = "Attention Inbox (Human + Operator)"
+
+    hr_cls = "badge-blocked" if snapshot.human_required_count > 0 else "muted"
+    op_cls = "badge-claimed" if snapshot.operator_count > 0 else "muted"
+
+    metrics_html = f"""<div style="display:flex; gap:1rem; margin-bottom:1.5rem;">
+  <div class="health-card" style="flex:1;">
+    <span class="muted" style="font-size:0.85rem;">Human Required</span>
+    <h2 style="margin:0.2rem 0;"><span class="badge {hr_cls}" style="font-size:1.4rem;">{snapshot.human_required_count}</span></h2>
+    <p class="muted" style="font-size:0.8rem; margin:0;">Critical escalation boundary</p>
+  </div>
+  <div class="health-card" style="flex:1;">
+    <span class="muted" style="font-size:0.85rem;">Operator Inbox</span>
+    <h2 style="margin:0.2rem 0;"><span class="badge {op_cls}" style="font-size:1.4rem;">{snapshot.operator_count}</span></h2>
+    <p class="muted" style="font-size:0.8rem; margin:0;">Operational items needing review</p>
+  </div>
+  <div class="health-card" style="flex:1;">
+    <span class="muted" style="font-size:0.85rem;">Routine Transitions</span>
+    <h2 style="margin:0.2rem 0;"><span class="badge muted" style="font-size:1.4rem;">{snapshot.routine_count}</span></h2>
+    <p class="muted" style="font-size:0.8rem; margin:0;">Background transitions (filtered)</p>
+  </div>
+</div>"""
+
+    # Filter navigation links
+    def _tab_link(target_class: str, label: str) -> str:
+        is_active = (filter_class == target_class)
+        style = "font-weight:bold; border-bottom:2px solid currentColor;" if is_active else "color:#4a5568;"
+        return f'<a href="/notifications?attention_class={target_class}" style="margin-right:1.25rem; text-decoration:none; padding-bottom:0.25rem; {style}">{label}</a>'
+
+    tabs_html = f"""<div style="margin-bottom:1.25rem; border-bottom:1px solid #e2e8f0; padding-bottom:0.5rem;">
+  {_tab_link("inbox", f"Attention Inbox ({snapshot.human_required_count + snapshot.operator_count})")}
+  {_tab_link("human-required", f"Human Required ({snapshot.human_required_count})")}
+  {_tab_link("operator", f"Operator ({snapshot.operator_count})")}
+  {_tab_link("routine", f"Routine ({snapshot.routine_count})")}
+  {_tab_link("all", f"All Events ({snapshot.total_count})")}
+</div>"""
+
+    table_html = _render_notifications_table(
+        display_items,
+        f"No items match attention filter '{filter_class}'.",
+    )
+
+    body = f"""<h2>{escape(title)}</h2>
+<p class="muted">Phase 3 console surface for human-attention routing (#648). Routine workflow transitions are filtered by default to eliminate notification fatigue.</p>
+{err_html}
+{metrics_html}
+{tabs_html}
+<h3>{escape(active_tab_title)}</h3>
+{table_html}"""
+
+    return render_page(title=title, body_html=body)

webui/notifications.py

@@ -0,0 +1,486 @@
+"""Notifications and human-attention routing module for Phase 3 web console (#648).
+
+Defines attention classes, event classification rules, and inbox aggregation so
+operators receive direct alerts only for human-required escalation boundaries
+(#628) while routine workflow transitions remain available for pull-based review.
+"""
+
+from __future__ import annotations
+
+from dataclasses import dataclass, field
+from datetime import datetime, timezone
+from typing import Any, Callable
+
+from webui import console_redaction
+from webui.project_registry import load_registry
+from webui.queue_loader import QueueSnapshot, load_queue_snapshot
+from webui.lease_loader import LeaseSnapshot, load_lease_snapshot
+from webui.system_health import SystemHealthSnapshot, load_system_health
+
+# Attention class definitions (#628, #648)
+ATTENTION_ROUTINE = "routine"
+ATTENTION_OPERATOR = "operator"
+ATTENTION_HUMAN_REQUIRED = "human-required"
+
+ATTENTION_CLASSES = (
+    ATTENTION_ROUTINE,
+    ATTENTION_OPERATOR,
+    ATTENTION_HUMAN_REQUIRED,
+)
+
+# Notification categories
+CATEGORY_AUTH = "auth"
+CATEGORY_BLOCKER = "blocker"
+CATEGORY_LEASE = "lease"
+CATEGORY_VALIDATION = "validation"
+CATEGORY_WORKFLOW = "workflow"
+CATEGORY_SYSTEM = "system"
+
+CATEGORIES = (
+    CATEGORY_AUTH,
+    CATEGORY_BLOCKER,
+    CATEGORY_LEASE,
+    CATEGORY_VALIDATION,
+    CATEGORY_WORKFLOW,
+    CATEGORY_SYSTEM,
+)
+
+
+@dataclass(frozen=True)
+class NotificationItem:
+    """A single notification or inbox event."""
+
+    id: str
+    attention_class: str  # "routine", "operator", "human-required"
+    category: str  # "auth", "blocker", "lease", "validation", etc.
+    title: str
+    summary: str
+    work_kind: str | None  # "issue", "pr", "session", "system"
+    work_number: int | None
+    project_id: str
+    repo_label: str
+    created_at: str
+    deep_link: str | None = None
+    requires_human: bool = False
+    extra: dict[str, Any] = field(default_factory=dict)
+
+    def as_dict(self) -> dict[str, Any]:
+        return {
+            "id": self.id,
+            "attention_class": self.attention_class,
+            "category": self.category,
+            "title": self.title,
+            "summary": console_redaction.redact_text(self.summary),
+            "work_kind": self.work_kind,
+            "work_number": self.work_number,
+            "project_id": self.project_id,
+            "repo_label": self.repo_label,
+            "created_at": self.created_at,
+            "deep_link": self.deep_link,
+            "requires_human": self.requires_human,
+            "extra": self.extra,
+        }
+
+
+@dataclass(frozen=True)
+class NotificationSnapshot:
+    """Snapshot of notifications and attention inbox state."""
+
+    project_id: str
+    repo_label: str
+    items: tuple[NotificationItem, ...]
+    human_required_count: int
+    operator_count: int
+    routine_count: int
+    total_count: int
+    fetch_error: str | None = None
+
+    @property
+    def inbox_items(self) -> tuple[NotificationItem, ...]:
+        """Items requiring operator or human attention (excluding routine)."""
+        return tuple(
+            item
+            for item in self.items
+            if item.attention_class in {ATTENTION_OPERATOR, ATTENTION_HUMAN_REQUIRED}
+        )
+
+    @property
+    def human_required_items(self) -> tuple[NotificationItem, ...]:
+        return tuple(
+            item for item in self.items if item.attention_class == ATTENTION_HUMAN_REQUIRED
+        )
+
+    @property
+    def operator_items(self) -> tuple[NotificationItem, ...]:
+        return tuple(
+            item for item in self.items if item.attention_class == ATTENTION_OPERATOR
+        )
+
+    @property
+    def routine_items(self) -> tuple[NotificationItem, ...]:
+        return tuple(
+            item for item in self.items if item.attention_class == ATTENTION_ROUTINE
+        )
+
+    def as_dict(self) -> dict[str, Any]:
+        return {
+            "project_id": self.project_id,
+            "repo_label": self.repo_label,
+            "human_required_count": self.human_required_count,
+            "operator_count": self.operator_count,
+            "routine_count": self.routine_count,
+            "total_count": self.total_count,
+            "fetch_error": self.fetch_error,
+            "inbox_items": [item.as_dict() for item in self.inbox_items],
+            "all_items": [item.as_dict() for item in self.items],
+        }
+
+
+def classify_attention_event(
+    category: str,
+    title: str,
+    summary: str,
+    *,
+    is_hard_stop: bool = False,
+    is_auth_failure: bool = False,
+    is_irrecoverable: bool = False,
+    is_decision_lock: bool = False,
+    is_validation_failure: bool = False,
+    is_stale: bool = False,
+    is_blocker: bool = False,
+) -> tuple[str, bool]:
+    """Classify an event into an attention class and human requirement flag.
+
+    Rules (#628, #648):
+    1. Critical boundaries (hard stop, auth failure, irrecoverable state,
+       decision lock, validation failure) -> ATTENTION_HUMAN_REQUIRED (requires_human=True).
+    2. Operational queues (blocker, stale lease, unassigned ready work, queue collision)
+       -> ATTENTION_OPERATOR (requires_human=False).
+    3. Routine state transitions (clean progression, healthy heartbeats) -> ATTENTION_ROUTINE (requires_human=False).
+
+    Classification uses structured flags and category only. Human-authored
+    ``title`` / ``summary`` text is never substring-matched for escalation
+    (PR #905 review B1) — callers that need text signals must set flags from
+    machine-generated status/detail fields before calling this function.
+    """
+    del title, summary  # kept for API stability; never used for classification
+    if (
+        is_hard_stop
+        or is_auth_failure
+        or is_irrecoverable
+        or is_decision_lock
+        or is_validation_failure
+        or category in {CATEGORY_AUTH, CATEGORY_VALIDATION}
+    ):
+        return ATTENTION_HUMAN_REQUIRED, True
+
+    if is_stale or is_blocker or category in {CATEGORY_BLOCKER, CATEGORY_LEASE}:
+        return ATTENTION_OPERATOR, False
+
+    return ATTENTION_ROUTINE, False
+
+
+def load_notifications_snapshot(
+    project_id: str | None = None,
+    *,
+    load_queue: Callable[..., QueueSnapshot] | None = None,
+    load_leases: Callable[..., LeaseSnapshot] | None = None,
+    load_health: Callable[..., SystemHealthSnapshot] | None = None,
+) -> NotificationSnapshot:
+    """Load and classify attention notifications across queue, leases, and system health."""
+    registry = load_registry()
+    project = None
+    if project_id:
+        for entry in registry.projects:
+            if entry.id == project_id:
+                project = entry
+                break
+    else:
+        project = registry.projects[0] if registry.projects else None
+
+    if project is None:
+        return NotificationSnapshot(
+            project_id=project_id or "",
+            repo_label="",
+            items=(),
+            human_required_count=0,
+            operator_count=0,
+            routine_count=0,
+            total_count=0,
+            fetch_error="project not found in registry",
+        )
+
+    queue_loader_fn = load_queue or load_queue_snapshot
+    lease_loader_fn = load_leases or load_lease_snapshot
+    health_loader_fn = load_health or load_system_health
+
+    try:
+        queue_snap = queue_loader_fn(project.id)
+    except TypeError:
+        queue_snap = queue_loader_fn(project_id=project.id)
+
+    try:
+        lease_snap = lease_loader_fn(project_id=project.id)
+    except TypeError:
+        lease_snap = lease_loader_fn(project.id)
+
+    try:
+        health_snap = health_loader_fn(project_id=project.id)
+    except TypeError:
+        try:
+            health_snap = health_loader_fn(project.id)
+        except TypeError:
+            health_snap = health_loader_fn()
+
+    items: list[NotificationItem] = []
+    now_iso = datetime.now(timezone.utc).isoformat()
+
+    # 1. System health alerts (highest priority)
+    for err_idx, probe_err in enumerate(getattr(health_snap, "probe_errors", ())):
+        att_cls, req_human = classify_attention_event(
+            CATEGORY_SYSTEM,
+            "System Health Probe Error",
+            probe_err,
+            is_blocker=True,
+        )
+        items.append(
+            NotificationItem(
+                id=f"notif-sys-err-{project.id}-{err_idx}",
+                attention_class=att_cls,
+                category=CATEGORY_SYSTEM,
+                title="System Health Error",
+                summary=f"System health error: {probe_err}",
+                work_kind="system",
+                work_number=None,
+                project_id=project.id,
+                repo_label=f"{project.gitea_owner}/{project.repo_name}",
+                created_at=now_iso,
+                deep_link="/system",
+                requires_human=req_human,
+            )
+        )
+
+    for probe in getattr(health_snap, "dependencies", ()):
+        if probe.status not in ("ok", "healthy"):
+            att_cls, req_human = classify_attention_event(
+                CATEGORY_SYSTEM,
+                f"Probe Failure: {probe.name}",
+                probe.detail or probe.status,
+                is_hard_stop=("stop" in probe.status or "fatal" in probe.status),
+                is_auth_failure=("auth" in probe.name.lower() or "unauthorized" in probe.status.lower()),
+                is_blocker=True,
+            )
+            items.append(
+                NotificationItem(
+                    id=f"notif-probe-{probe.name}",
+                    attention_class=att_cls,
+                    category=CATEGORY_AUTH if "auth" in probe.name.lower() else CATEGORY_SYSTEM,
+                    title=f"Health Probe Alert: {probe.name}",
+                    summary=f"Probe '{probe.name}' reported status '{probe.status}': {probe.detail}",
+                    work_kind="system",
+                    work_number=None,
+                    project_id=project.id,
+                    repo_label=f"{project.gitea_owner}/{project.repo_name}",
+                    created_at=now_iso,
+                    deep_link="/system",
+                    requires_human=req_human,
+                )
+            )
+
+    # 2. Queue items (PRs and Issues)
+    for pr in queue_snap.prs:
+        if "blocked" in pr.badges:
+            att_cls, req_human = classify_attention_event(
+                CATEGORY_BLOCKER,
+                f"PR #{pr.number} Blocked",
+                f"PR #{pr.number} '{pr.title}' is blocked or has merge conflicts.",
+                is_blocker=True,
+            )
+            items.append(
+                NotificationItem(
+                    id=f"notif-pr-block-{pr.number}",
+                    attention_class=att_cls,
+                    category=CATEGORY_BLOCKER,
+                    title=f"Blocked PR #{pr.number}",
+                    summary=f"PR #{pr.number} ({pr.title}) requires merge conflict resolution.",
+                    work_kind="pr",
+                    work_number=pr.number,
+                    project_id=project.id,
+                    repo_label=f"{project.gitea_owner}/{project.repo_name}",
+                    created_at=now_iso,
+                    deep_link=f"/traffic",
+                    requires_human=req_human,
+                )
+            )
+        elif "stale" in pr.badges:
+            att_cls, req_human = classify_attention_event(
+                CATEGORY_WORKFLOW,
+                f"PR #{pr.number} Stale",
+                f"PR #{pr.number} '{pr.title}' has had no activity for over 14 days.",
+                is_stale=True,
+            )
+            items.append(
+                NotificationItem(
+                    id=f"notif-pr-stale-{pr.number}",
+                    attention_class=att_cls,
+                    category=CATEGORY_WORKFLOW,
+                    title=f"Stale PR #{pr.number}",
+                    summary=f"PR #{pr.number} ({pr.title}) is stale.",
+                    work_kind="pr",
+                    work_number=pr.number,
+                    project_id=project.id,
+                    repo_label=f"{project.gitea_owner}/{project.repo_name}",
+                    created_at=now_iso,
+                    deep_link=f"/queue",
+                    requires_human=req_human,
+                )
+            )
+        else:
+            # Routine PR transition
+            att_cls, req_human = classify_attention_event(
+                CATEGORY_WORKFLOW,
+                f"PR #{pr.number} Active",
+                f"PR #{pr.number} '{pr.title}' is in routine state {', '.join(pr.badges)}.",
+            )
+            items.append(
+                NotificationItem(
+                    id=f"notif-pr-routine-{pr.number}",
+                    attention_class=att_cls,
+                    category=CATEGORY_WORKFLOW,
+                    title=f"Routine PR #{pr.number}",
+                    summary=f"PR #{pr.number} ({pr.title}) state: {', '.join(pr.badges)}.",
+                    work_kind="pr",
+                    work_number=pr.number,
+                    project_id=project.id,
+                    repo_label=f"{project.gitea_owner}/{project.repo_name}",
+                    created_at=now_iso,
+                    deep_link=f"/queue",
+                    requires_human=req_human,
+                )
+            )
+
+    for issue in queue_snap.issues:
+        if "duplicate" in issue.badges:
+            att_cls, req_human = classify_attention_event(
+                CATEGORY_BLOCKER,
+                f"Issue #{issue.number} Duplicate PRs",
+                f"Issue #{issue.number} has multiple linked PRs.",
+                is_blocker=True,
+            )
+            items.append(
+                NotificationItem(
+                    id=f"notif-issue-dup-{issue.number}",
+                    attention_class=att_cls,
+                    category=CATEGORY_BLOCKER,
+                    title=f"Duplicate PRs on Issue #{issue.number}",
+                    summary=f"Issue #{issue.number} ({issue.title}) linked to multiple PRs.",
+                    work_kind="issue",
+                    work_number=issue.number,
+                    project_id=project.id,
+                    repo_label=f"{project.gitea_owner}/{project.repo_name}",
+                    created_at=now_iso,
+                    deep_link=f"/traffic",
+                    requires_human=req_human,
+                )
+            )
+        elif "claimed" in issue.badges or "in-review" in issue.badges:
+            att_cls, req_human = classify_attention_event(
+                CATEGORY_WORKFLOW,
+                f"Issue #{issue.number} Active",
+                f"Issue #{issue.number} '{issue.title}' in state {', '.join(issue.badges)}.",
+            )
+            items.append(
+                NotificationItem(
+                    id=f"notif-issue-routine-{issue.number}",
+                    attention_class=att_cls,
+                    category=CATEGORY_WORKFLOW,
+                    title=f"Routine Issue #{issue.number}",
+                    summary=f"Issue #{issue.number} ({issue.title}) state: {', '.join(issue.badges)}.",
+                    work_kind="issue",
+                    work_number=issue.number,
+                    project_id=project.id,
+                    repo_label=f"{project.gitea_owner}/{project.repo_name}",
+                    created_at=now_iso,
+                    deep_link=f"/queue",
+                    requires_human=req_human,
+                )
+            )
+
+    # 3. Leases / Collisions
+    for lease in lease_snap.reviewer_leases:
+        if lease.get("is_expired") or lease.get("status") == "expired":
+            pr_num = lease.get("pr_number") or lease.get("work_item_number")
+            att_cls, req_human = classify_attention_event(
+                CATEGORY_LEASE,
+                f"Reviewer Lease Expired for PR #{pr_num}",
+                f"Reviewer lease for PR #{pr_num} has expired.",
+                is_stale=True,
+            )
+            items.append(
+                NotificationItem(
+                    id=f"notif-lease-exp-pr-{pr_num}",
+                    attention_class=att_cls,
+                    category=CATEGORY_LEASE,
+                    title=f"Expired Reviewer Lease (PR #{pr_num})",
+                    summary=f"Reviewer lease for PR #{pr_num} expired.",
+                    work_kind="pr",
+                    work_number=pr_num,
+                    project_id=project.id,
+                    repo_label=f"{project.gitea_owner}/{project.repo_name}",
+                    created_at=now_iso,
+                    deep_link="/leases",
+                    requires_human=req_human,
+                )
+            )
+
+    for col_idx, collision in enumerate(lease_snap.duplicate_prs):
+        att_cls, req_human = classify_attention_event(
+            CATEGORY_BLOCKER,
+            f"Duplicate PR Collision ({collision.kind})",
+            collision.message,
+            is_blocker=True,
+        )
+        issue_part = collision.issue_number if collision.issue_number is not None else "none"
+        kind_part = (collision.kind or "unknown").replace(" ", "-")
+        items.append(
+            NotificationItem(
+                id=f"notif-collision-{kind_part}-{issue_part}-{col_idx}",
+                attention_class=att_cls,
+                category=CATEGORY_BLOCKER,
+                title=f"Collision Alert ({collision.kind})",
+                summary=collision.message,
+                work_kind="issue" if collision.issue_number else "pr",
+                work_number=collision.issue_number,
+                project_id=project.id,
+                repo_label=f"{project.gitea_owner}/{project.repo_name}",
+                created_at=now_iso,
+                deep_link="/leases",
+                requires_human=req_human,
+            )
+        )
+
+    human_req_count = sum(1 for i in items if i.attention_class == ATTENTION_HUMAN_REQUIRED)
+    operator_count = sum(1 for i in items if i.attention_class == ATTENTION_OPERATOR)
+    routine_count = sum(1 for i in items if i.attention_class == ATTENTION_ROUTINE)
+
+    # Fetch errors are transport/load failures only — not probe results that
+    # already surface as first-class notification items (PR #905 review B3).
+    fetch_err = queue_snap.fetch_error or lease_snap.fetch_error
+    if isinstance(fetch_err, (tuple, list)):
+        fetch_err = "; ".join(fetch_err) if fetch_err else None
+
+    return NotificationSnapshot(
+        project_id=project.id,
+        repo_label=f"{project.gitea_owner}/{project.repo_name}",
+        items=tuple(items),
+        human_required_count=human_req_count,
+        operator_count=operator_count,
+        routine_count=routine_count,
+        total_count=len(items),
+        fetch_error=fetch_err,
+    )
+
+
+def snapshot_to_dict(snapshot: NotificationSnapshot) -> dict[str, Any]:
+    """JSON-serializable export for /api/v1/notifications."""
+    return snapshot.as_dict()