SubMiner/backlog/tasks/task-70 - Unify-config-path-resolution-across-main-and-launcher.md

id, title, status, assignee, created_date, updated_date, labels, dependencies, priority

id	title	status	assignee	created_date	updated_date	labels	dependencies	priority
TASK-70	Unify config path resolution across main and launcher	Done	codex-main	2026-02-18 11:35	2026-02-19 09:05	config launcher consistency		high

Description

Config discovery logic is duplicated and inconsistent between app main process and launcher. Main resolves XDG_CONFIG_HOME + case variants (SubMiner/subminer), while launcher loaders still hardcode ~/.config/SubMiner in places.

Action Steps

1. Extract shared config path discovery utility (candidate roots, case variants, .jsonc/.json preference).
2. Replace ad-hoc resolution in src/main.ts, launcher/main.ts, and launcher/config.ts.
3. Normalize fallback behavior when config file is absent.
4. Keep existing user-visible behavior for subminer config path|show.
5. Add tests for XDG and case-variant path resolution.
6. Update docs if path precedence changes.

Acceptance Criteria

• #1 Single canonical path-resolution logic used by app and launcher
• #2 XDG_CONFIG_HOME and SubMiner|subminer precedence covered by tests
• #3 No behavior drift for existing config-path CLI commands

Implementation Plan

1. Add focused precedence tests in src/config/path-resolution.test.ts for XDG/home base-dir order, SubMiner/subminer fallbacks, config.jsonc/config.json preference, and fallback path behavior.
2. Create canonical helper module src/config/path-resolution.ts exporting shared discovery functions for config dir and config file resolution.
3. Replace duplicated path-resolution logic in src/main.ts, launcher/main.ts, and launcher config loaders in launcher/config.ts to use the canonical helper.
4. Verify no behavior drift with bun run build, config/path tests, and launcher bundle build; then update backlog acceptance/DoD checks and execution notes.

Implementation Notes

2026-02-19T08:52:23Z: Started task execution; gathering code context for unified config-path resolution across main and launcher.

Plan captured in docs/plans/2026-02-19-task-70-unify-config-path-resolution.md and recorded in task. User requested immediate execution after planning.

Implemented canonical config path discovery in src/config/path-resolution.ts and switched src/main.ts, launcher/main.ts, and launcher config loaders in launcher/config.ts to use it.

Added precedence regression coverage in src/config/path-resolution.test.ts and wired into test:config:dist.

Verification passed: bun run build, node --test dist/config/path-resolution.test.js dist/config/config.test.js, and bun build ./launcher/main.ts --target=bun --packages=bundle --outfile=/tmp/subminer-task70.

Final Summary

Unified config discovery behind a single canonical utility at src/config/path-resolution.ts and replaced duplicated resolvers in src/main.ts, launcher/main.ts, and launcher config loaders in launcher/config.ts. This keeps XDG_CONFIG_HOME + ~/.config base-dir handling, SubMiner|subminer case variants, and config.jsonc > config.json file preference consistent across app and launcher while preserving subminer config path|show fallback output behavior.

Added regression tests in src/config/path-resolution.test.ts for base-dir trimming/dedup, candidate precedence, lowercase fallback, directory fallback for main config dir resolution, and fallback file-path behavior; wired the new suite into test:config:dist in package.json.

Verification run: bun run build, node --test dist/config/path-resolution.test.js dist/config/config.test.js, bun build ./launcher/main.ts --target=bun --packages=bundle --outfile=/tmp/subminer-task70 (all pass).

Definition of Done

• #1 Launcher and config tests pass
• #2 Code no longer duplicates config path candidate logic