fix(P0): close 15 blockers + add 26 regression tests; fix wiring schema regression

Phase A (security red lines) — CLOSED:
- B8: 3x command injection fixed (execFileSync + args array in CMake/CppBuilder/Cppcheck)
- B6: ToolRegistry permission bypass fixed (real task_scope/profile passed)
- B7: ACTION_BRANCHES this-binding crash fixed (instance method)
- B17: DeveloperLogEncryptor hardcoded 'dev-key' removed (throws if no key)
- B22: CommandRiskAnalyzer 'in' operator bug fixed (includes)
- B1: EventStore.project() transaction handle now passed to all repos
- B2: workspace projection illegal enum fixed (active/merged)
- B4: route_prefix separator unified to '/'
- B5: TaskAttempt column mapping fixed

Other blockers fixed:
- B3: project-level DB schema aligned to db-schema §20 (.air/local, learned_memories)
- B9: cpp.* tools registered through PermissionEngine path
- B11: Scheduler BLOCKED/CANCELLED states added
- B18: CapabilityTrustLevel 5-level enum aligned
- B19: PermissionEngine block/refuse/announce_then_run + grant_scope
- B20: Worker exit code 4 = parent_cancelled
- B24: project_id now randomUUID

Regression fix (introduced by B3 schema refactor):
- wiring.ts capture_debug_record/promote_memory_entry realigned to
  refactored DebugRecord/MemoryEntry interfaces (was compile-level decoupling)

Tests: 128 regression/unit tests pass (22 regression + 3 unit + 3 e2e suites)

Still open (tracked for next round): B10 (INV-2 outbox emit), B12 (Scheduler
event projection), B13 (MainAgent LLM classify), B14 (IPC envelope fields),
B15 (TUI OpenTUI), B16 (api_key strict), B21 (CLI init INV-3), B23 (e2e real),
B25 (MVP tools), B26 (ContextAssembler L6-L9)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

packages/runtime/src/storage/repositories/TaskAttemptRepository.ts

@@ -60,8 +60,8 @@ export class TaskAttemptRepository implements Repository<TaskAttemptRecord, Task
   /**
    * Get a task attempt by ID.
    */
-  async get(id: UUID, _tx?: TransactionHandle): Promise<TaskAttemptRecord | undefined> {
-    const stmt = this.db.prepare('SELECT * FROM task_attempts WHERE id = ?')
+  async get(id: UUID, tx?: TransactionHandle): Promise<TaskAttemptRecord | undefined> {
+    const stmt = (tx?.db ?? this.db).prepare('SELECT * FROM task_attempts WHERE id = ?')
     const row = stmt.get(id) as TaskAttemptRecord | undefined
     return row
   }
@@ -69,11 +69,11 @@ export class TaskAttemptRepository implements Repository<TaskAttemptRecord, Task
   /**
    * Insert a new task attempt. Status is set by EventStore projection (INV-1).
    */
-  async insert(record: TaskAttemptInsert, _tx?: TransactionHandle): Promise<void> {
+  async insert(record: TaskAttemptInsert, tx?: TransactionHandle): Promise<void> {
     // Status is set by EventStore.project(), not by caller
     const status: TaskAttemptStatus = 'pending'
 
-    const stmt = this.db.prepare(`
+    const stmt = (tx?.db ?? this.db).prepare(`
       INSERT INTO task_attempts (
         id, session_id, task_id, attempt_index,
         agent_id, status,
@@ -102,7 +102,7 @@ export class TaskAttemptRepository implements Repository<TaskAttemptRecord, Task
   /**
    * Update an existing task attempt. Status changes only via EventStore projection (INV-1).
    */
-  async update(id: UUID, patch: TaskAttemptUpdate, _tx?: TransactionHandle): Promise<void> {
+  async update(id: UUID, patch: TaskAttemptUpdate, tx?: TransactionHandle): Promise<void> {
     const fields: string[] = []
     const values: unknown[] = []
 
@@ -112,6 +112,10 @@ export class TaskAttemptRepository implements Repository<TaskAttemptRecord, Task
       values.push(patch.agent_id)
     }
     if (patch.failure_signature !== undefined) {
+      fields.push('failure_signature = ?')
+      values.push(patch.failure_signature)
+    }
+    if (patch.failure_summary !== undefined) {
       fields.push('failure_summary = ?')
       values.push(patch.failure_summary)
     }
@@ -133,7 +137,7 @@ export class TaskAttemptRepository implements Repository<TaskAttemptRecord, Task
     }
 
     values.push(id)
-    const stmt = this.db.prepare(`UPDATE task_attempts SET ${fields.join(', ')} WHERE id = ?`)
+    const stmt = (tx?.db ?? this.db).prepare(`UPDATE task_attempts SET ${fields.join(', ')} WHERE id = ?`)
     stmt.run(...values)
   }