refactor: move task state to shared sqlite

Move task run, delivery, and flow registry persistence onto the shared OpenClaw state SQLite database.

Summary:
- Store task runs, delivery state, and flow runs in state/openclaw.sqlite via the generated Kysely schema.
- Migrate shipped task sidecars into the shared state DB and archive old sidecars, including invalid-config/read-only CLI paths.
- Keep startup migration lightweight for read-only status/tasks paths while still detecting known legacy state markers and custom session stores.

Verification:
- .agents/skills/autoreview/scripts/autoreview --mode local: clean after final fix
- pnpm test src/tasks/task-registry.store.test.ts src/tasks/task-flow-registry.store.test.ts src/commands/doctor-state-migrations.test.ts -- --reporter=verbose
- pnpm test src/commands/doctor-state-migrations.test.ts src/cli/program/config-guard.test.ts src/cli/route.test.ts src/cli/command-path-policy.test.ts -- --reporter=verbose
- pnpm test src/cli/program/config-guard.test.ts src/cli/route.test.ts src/cli/command-startup-policy.test.ts src/cli/command-path-policy.test.ts src/cli/command-execution-startup.test.ts -- --reporter=verbose
- pnpm test src/cli/program/config-guard.test.ts src/cli/argv.test.ts src/cli/route.test.ts src/commands/doctor-config-preflight.state-migration.test.ts -- --reporter=verbose
- pnpm test src/tasks/task-flow-registry.store.test.ts -- --reporter=verbose
- pnpm test test/scripts/lint-suppressions.test.ts -- --reporter=verbose
- pnpm db:kysely:check
- pnpm lint:kysely
- git diff --check HEAD
- pnpm test:startup:memory
- PR CI green on 2f7d76f0d5

src/cli/command-execution-startup.test.ts

@@ -45,7 +45,7 @@ describe("command-execution-startup", () => {
       startupPolicy: {
         suppressDoctorStdout: true,
         hideBanner: false,
-        skipConfigGuard: true,
+        skipConfigGuard: false,
         loadPlugins: false,
         pluginRegistry: { scope: "channels" },
       },
@@ -168,7 +168,7 @@ describe("command-execution-startup", () => {
       startupPolicy: {
         suppressDoctorStdout: true,
         hideBanner: false,
-        skipConfigGuard: true,
+        skipConfigGuard: false,
         loadPlugins: false,
         pluginRegistry: { scope: "channels" },
       },
@@ -181,7 +181,7 @@ describe("command-execution-startup", () => {
       allowInvalid: undefined,
       loadPlugins: false,
       pluginRegistry: { scope: "channels" },
-      skipConfigGuard: true,
+      skipConfigGuard: false,
     });
 
     const messageRuntime = {} as never;