feat(storage): move desktop SQLite ownership into a storage utility process

Main no longer opens desktop business SQLite. A single utility-process
storage owner holds the Assistant, Knowledge, attachment, document-result,
remote-binding and native model-ledger databases and runs whole domain
transactions; Main and Runtime callers use explicit async domain operations.

- Remove the Main readWithFallback path and the supervision worker's
  separate business write connection; manifests are scanned read-only and
  committed by the sole writer.
- Remote events are ACKed only after commit; process loss reports
  unconfirmed writes instead of replaying them.
- Use native utilityProcess messaging with one in-flight bound (32) and
  ordered waiting instead of capacity rejection and retries.
- Start the storage process before the window so startup overlaps.
- Keep short tool output in memory and store full output once in owned
  storage; paging, branching, restart and deletion reuse that copy.
- Put required runtime launch files under goodbuddy-prefixed owned temp
  directories and reclaim confirmed stale ones; stop writing duplicate
  parsed.md.
- Add lint guards for SQLite ownership and architecture, concurrency
  acceptance fixtures, and maintenance/architecture documentation.

Validation: typecheck and lint pass. Alternating baseline (edf019aa) vs
candidate runs show no regression on single-session, C01, C02, C04 and a
5-minute C06; Main p99 drops from ~21 ms to ~16.7 ms under concurrency.
Fresh portable copy (1.75M events) upgrade content unchanged; real-model
output paging passes with 4 external requests. Full npm test runs had
1-9 different timing-sensitive failures per run that pass when rerun.
Not covered: C03 review publication, C07 source body, app-level C05.

src/main/computer-control/database-audit.ts

@@ -1,4 +1,4 @@
-import type { AssistantDatabase } from '../assistant/assistant-database'
+import type { AssistantStoragePort, Awaitable } from '../assistant-storage-port'
 import type {
   ComputerControlAuditEvent,
   ComputerControlAuditSink
@@ -7,9 +7,9 @@ import type {
 export class DatabaseComputerControlAuditSink
   implements ComputerControlAuditSink
 {
-  constructor(private readonly database: AssistantDatabase) {}
+  constructor(private readonly database: Pick<AssistantStoragePort, 'persistComputerControlAudit'>) {}
 
-  write(event: ComputerControlAuditEvent): void {
-    this.database.persistComputerControlAudit(event)
+  write(event: ComputerControlAuditEvent): Awaitable<void> {
+    return this.database.persistComputerControlAudit(event)
   }
 }