chore: push all design docs, V2 plan specs, and current working state

Includes AirPlan design documents, AircOding-alpha1-plan, AirPlanV2,
AirPlan-ParaV2, AirPlan-Para V1 reference docs, and all working code
changes across packages.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

AirPlan/docs/architecture/event-registry-v1.md

@@ -397,6 +397,35 @@ interface TaskInterruptedPayload {
 }
 ```
 
+#### `task.removed` v1
+
+Persistence: durable.
+
+Domain update: delete `tasks` row (only for pending status); insert event record.
+
+```ts
+interface TaskRemovedPayload {
+  task_id: string
+  reason: string
+  removed_by: string
+}
+```
+
+#### `task.invalidated` v1
+
+Persistence: durable.
+
+Domain update: update `tasks.status = invalidated`; insert event record.
+
+```ts
+interface TaskInvalidatedPayload {
+  task_id: string
+  adr_id: string
+  reason: string
+  rollback_ref?: string
+}
+```
+
 ### 3.5 Tool Events
 
 #### `tool.started` v1