fix: second instance start handling

backlog/tasks/task-88 - Fix-second-instance-start-handling-when-overlay-runtime-is-already-initialized.md

@@ -0,0 +1,68 @@
+---
+id: TASK-88
+title: >-
+  Fix second-instance --start handling when overlay runtime is already
+  initialized
+status: Done
+assignee:
+  - codex
+created_date: '2026-03-06 07:30'
+updated_date: '2026-03-06 07:31'
+labels: []
+dependencies: []
+references:
+  - /home/sudacode/projects/japanese/SubMiner/src/core/services/cli-command.ts
+  - >-
+    /home/sudacode/projects/japanese/SubMiner/src/core/services/cli-command.test.ts
+priority: medium
+---
+
+## Description
+
+<!-- SECTION:DESCRIPTION:BEGIN -->
+Restore the CLI command guard so a second-instance `--start` request does not reconnect or reinitialize overlay work when the overlay runtime is already active, while preserving other second-instance commands.
+<!-- SECTION:DESCRIPTION:END -->
+
+## Acceptance Criteria
+<!-- AC:BEGIN -->
+- [x] #1 Second-instance `--start` logs that the app is already running when the overlay runtime is initialized.
+- [x] #2 Second-instance `--start` does not reconnect the MPV client when the overlay runtime is already initialized.
+- [x] #3 Second-instance commands that include non-start actions still execute those actions.
+- [x] #4 Regression coverage documents the guarded second-instance behavior.
+<!-- AC:END -->
+
+## Implementation Plan
+
+<!-- SECTION:PLAN:BEGIN -->
+1. Reproduce the failing `handleCliCommand` second-instance `--start` regression in `src/core/services/cli-command.test.ts`.
+2. Update `src/core/services/cli-command.ts` so second-instance `--start` is ignored when the overlay runtime is already initialized, while still allowing non-start actions in the same invocation.
+3. Run focused CLI command tests, then rerun the core test target if practical, and record acceptance criteria/results.
+<!-- SECTION:PLAN:END -->
+
+## Implementation Notes
+
+<!-- SECTION:NOTES:BEGIN -->
+Reproduced the failing second-instance `--start` regression in `src/core/services/cli-command.test.ts` before editing.
+
+Restored a guard in `src/core/services/cli-command.ts` that ignores second-instance `--start` when the overlay runtime is already initialized, but still allows other flags in the same invocation to run.
+
+Verification: `bun test src/core/services/cli-command.test.ts`, `bun run test:core:src`, and `bun run test` all pass; the six immersion tracker tests remain skipped as before.
+<!-- SECTION:NOTES:END -->
+
+## Final Summary
+
+<!-- SECTION:FINAL_SUMMARY:BEGIN -->
+Restored the missing second-instance `--start` guard in `src/core/services/cli-command.ts`.
+
+- Added an `ignoreSecondInstanceStart` check so `handleCliCommand` logs `Ignoring --start because SubMiner is already running.` when a second-instance `--start` arrives after the overlay runtime is already initialized.
+- Updated start gating so pure duplicate `--start` requests no longer reconnect the MPV client, while combined commands such as `--start --toggle-visible-overlay` still execute their non-start behavior and can connect through those paths.
+- Verified the regression with existing CLI command coverage and reran the broader test targets.
+
+Tests run:
+- `bun test src/core/services/cli-command.test.ts`
+- `bun run test:core:src`
+- `bun run test`
+
+Notes:
+- The six skipped immersion tracker tests are unchanged from the pre-fix baseline.
+<!-- SECTION:FINAL_SUMMARY:END -->