merge(master): sync PR #861 with master; preserve F1–F10

Resolve conflicts from master (#858/#864/#868) while keeping published F10
PID-less lock freshness and dirty-orphan recovery (Issue #860 / PR #861).

Conflict resolutions:
- issue_lock_provenance.py: keep both SOURCE_RECOVER_DIRTY_ORPHANED and SOURCE_DIRTY_SAME_CLAIMANT_REBIND
- task_capability_map.py: keep both recover and rebind task entries
- gitea_mcp_server.py: keep both MCP tools
- issue_lock_store.py: restore F1–F9 helpers + surgical F10 owner_pid cascade

Closes #860

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

issue_lock_provenance.py

@@ -17,12 +17,17 @@ SOURCE_LOCK_ISSUE = "gitea_lock_issue"
 SOURCE_LOCK_ADOPTION = "gitea_lock_issue_adoption"
 SOURCE_OPERATOR_OVERRIDE = "operator_override"
 SOURCE_RECOVER_DIRTY_ORPHANED = "gitea_recover_dirty_orphaned_issue_worktree"
+# #864: dirty-preserving same-claimant author-session rebind (dead owner PID).
+SOURCE_DIRTY_SAME_CLAIMANT_REBIND = (
+    "gitea_rebind_dirty_same_claimant_author_session"
+)
 
 SANCTIONED_LOCK_SOURCES = frozenset({
     SOURCE_LOCK_ISSUE,
     SOURCE_LOCK_ADOPTION,
     SOURCE_OPERATOR_OVERRIDE,
     SOURCE_RECOVER_DIRTY_ORPHANED,
+    SOURCE_DIRTY_SAME_CLAIMANT_REBIND,
 })
 
 _OPERATOR_OVERRIDE_ENV = "GITEA_ISSUE_LOCK_OPERATOR_OVERRIDE"