fix(commands): list global commands over colliding built-in commands

[myk1yt]

Related GitHub Issue

Closes: #1730

Description

getCommands() gave built-ins precedence over colliding global user commands in the listing/autocomplete, while getCommand() executed the user's global file — so the UI advertised the built-in (description, argument hints) but /name ran the user's command. The function's own doc comment ("later sources override earlier ones") was contradicted by a guard that skipped global commands whose name already existed.

This PR removes the guard so the sequential scan (built-ins → global → project) makes later sources override earlier ones, matching getCommand()'s project > global > built-in resolution and the documented contract.

Test Procedure

• New getCommands source precedence block: global init.md colliding with built-in init → listed with source: "global"; project init.md colliding with global → source: "project" (ordering guard). Verified: global-over-built-in test fails before the fix.
• vitest run services/command/__tests__/ → 32 passed / 1 pre-existing skip.
• pnpm run test:coverage:core → exit 0 (run twice incl. one uncached).
• pnpm run check-types → 0 errors. ESLint → clean, suppression counts unchanged.

Pre-Submission Checklist

• Issue Linked: This PR is linked to an approved GitHub Issue (see "Related GitHub Issue" above).
• Scope: My changes are focused on the linked issue (one major feature/fix per PR).
• Self-Review: I have performed a thorough self-review of my code.
• Testing: New and/or updated tests have been added to cover my changes (if applicable).
• Visual Snapshot (UI changes only): N/A.
• Documentation Impact: No documentation updates are required.
• Contribution Guidelines: I have read and agree to the Contributor Guidelines.

Visual Snapshots

N/A.

Videos (interaction / animation only)

N/A.

Documentation Updates

• No documentation updates are required.

Additional Notes

Consumers of the listing (getCommandNames, webview command palette, public API) only display metadata — execution already resolved global-over-built-in, so this aligns display with behavior.

Get in Touch

GitHub: @myk1yt — please tag me here; I monitor notifications.

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src/services/command/__tests__/symlink-commands.spec.ts (1)

329-400: LGTM!

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📝 Summary

Summary by CodeRabbit

• Bug Fixes
  • Improved command resolution when multiple commands share the same name.
  • Project commands now take precedence over global commands, and global commands take precedence over built-in commands.
  • Commands discovered within the same command directory now resolve consistently, with deterministic selection when names conflict.
  • Improved handling of duplicate commands located through symlinked project directories, ensuring the same command is selected regardless of discovery order.

Walkthrough

The command scanner now applies later-source precedence and deterministic duplicate selection. Tests cover global-over-built-in, project-over-global, and symlinked project commands.

Changes

Command source precedence

Layer / File(s)	Summary
Apply and validate command precedence src/services/command/commands.ts, src/services/command/__tests__/frontmatter-commands.spec.ts, src/services/command/__tests__/symlink-commands.spec.ts	scanCommandDirectory always stores resolved commands and sorts paths before resolving duplicates. Tests verify global-over-built-in, project-over-global, and deterministic symlinked-command precedence.

Priority: ➖ Normal

Estimated code review effort: 2 (Simple) | ~15 minutes

Change: Bug fix · Severity of issue fixed: Medium

🚥 Pre-merge checks | ✅ 8

✅ Passed checks (8 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	The change satisfies [#1730]. scanCommandDirectory now unconditionally writes commands to the map. Built-ins load first, global commands load next, and project commands load last. Global commands th…
Out of Scope Changes check	✅ Passed	The production change and tests remain within the command listing and precedence scope of [#1730]. The path ordering and symlink tests support deterministic command selection for duplicate directory e…
Regression Evidence	✅ Passed	Focused coverage is present at the service unit-test layer. frontmatter-commands.spec.ts verifies global-over-built-in and project-over-global precedence using distinct source and content assertions…
Security Boundaries	✅ Passed	PASS. The only production change is src/services/command/commands.ts: it makes later command sources overwrite earlier entries and sorts duplicate symlink entries. This changes listing metadata only…
Persistence Integrity	✅ Passed	No changed persistence path exists. The pull request changes src/services/command/commands.ts only in scanCommandDirectory: it sorts discovered paths, reads command files with fs.readFile, and u…
Lifecycle Resource Cleanup	✅ Passed	PASS. The changed path is scanCommandDirectory in src/services/command/commands.ts. It only sorts collected file metadata and overwrites entries in an in-memory Map; its filesystem operations re…
Title check	✅ Passed	The title clearly identifies the main change: global commands take precedence over colliding built-in commands.
Description check	✅ Passed	The description includes the linked issue, implementation details, test procedure and results, checklist, documentation impact, and reviewer contact information.

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• 🪄 Fix CodeRabbit comments on this PR

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Inline comments:
In `@src/services/command/commands.ts`:
- Line 331: Make same-source command selection deterministic in
resolveCommandDirectoryEntry by ordering duplicate command candidates by their
paths before the commands.set insertion, rather than relying on concurrent
resolution completion order. Preserve the existing project/global/built-in
precedence, and add coverage for two symlinked directories defining the same
command to verify the path-order winner.

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src/services/command/commands.ts

[warning] 331-331: Mutation test advisory
src/services/command/commands.ts:331: Survived ObjectLiteral mutant (replacement: {}). See the job summary for the complete list and resolution guidance.

[edelauna]

Please address all open comments

[myk1yt]

Synced with current main (merge commit b9dbfd3, clean) and addressed the three open review threads in fbb7340:

Directory-symlink listing/execution inconsistency (jaszhix) — reproduced first with a real directory symlink: the listing picked the global init while execution picked the built-in. Fix direction: the listing now honors execution's resolution limits. resolveCommandSymLink() no longer descends into directory-symlink targets, so getCommands() surfaces exactly what getCommand() can execute (direct command files and file symlinks at the commands directory root). Execution is untouched; normal files and file symlinks behave as before. New real-filesystem spec (symlink-directory-consistency.spec.ts) asserts listing and execution select the same command for the collision, the symlink-only, and the file-symlink cases.

Deterministic-order test concern (edelauna) — with directory-symlink descent removed, the completion-order-dependent duplicate-name path no longer exists, so the fileInfo sort and its two order-dependent tests were removed rather than strengthened; no order-dependent behavior remains to pin.

Precedence coverage (edelauna) — the block now asserts filePath and toHaveLength(1) on both existing cases, plus new project-over-built-in (global empty) and three-way built-in/global/project collision tests.

Verification: vitest run services/command → 36 passed, 2 skipped (win32-only by design); consumer suites (commands.spec.ts, command-integration.spec.ts, command-mentions.spec.ts) → 63 passed; check-types clean; eslint clean.

[myk1yt]

Follow-up on the Ubuntu platform-unit-test failure at fbb7340 — fixed in 9f764fc (3 insertions, 2 deletions, one spec file; production code untouched).

Root cause was a stale mock, not a production bug: the pre-existing should not discover commands from symlinked directories test is skipIf(win32), so my rewrite of its assertions never executed on the Windows lane or locally — only the Ubuntu lane ran it. Its readFile mock answered for any path containing nested.md, so the added getCommand() parity assertion was "served" a direct file the mocked readdir never listed (impossible on a real fs; the getCommands half of the assertion and the real-filesystem consistency spec both passed on Ubuntu, confirming production behavior is correct). The mock now only resolves reads inside the symlink target directory.

Verification: temporarily un-skipped the test locally and ran it green (37 passed), then restored the skip marker; full battery 8 files / 99 passed, 2 win32-only skips; check-types and eslint clean. CI on 9f764fc42: all lanes green including platform-unit-test (ubuntu-latest).