Git log dashboard

[jaromil]

panel in dashboard showing current git log

[Copilot]

Pull request overview

Adds a “Git log” panel to the dashboard by introducing a backend /api/git/log endpoint and wiring a new frontend store + UI rendering path (replacing the previous “API metrics” dashboard column).

Changes:

• Backend: add internal/gitlog (git command adapter + parser) and expose it via GET /api/git/log.
• Frontend: add fetchGitLog, dashboard store plumbing, conventional-commit parsing, and a new Git log UI section in Dashboard.svelte.
• Docs/plans: document the new endpoint and record implementation notes.

Reviewed changes

Copilot reviewed 18 out of 18 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
internal/gitlog/parser_test.go	Adds unit tests for parsing git log output (binary/truncation/empty).
internal/gitlog/parser.go	Implements parsing of git log --numstat output into structured commits/files/stats.
internal/gitlog/gitlog.go	Adds git command reader, options normalization, error classification, and shared DTOs.
internal/api/routes.go	Registers /api/git/log route and wires GitCmdReader into the REST handler.
internal/api/rest_types.go	Adds REST-layer response DTOs for the git log payload and adds GitLogReader to RestHandler.
internal/api/rest_git.go	Implements GET /api/git/log handler, query param validation, timeout handling, and DTO conversion.
internal/api/rest_git_test.go	Adds API handler tests for payload, validation, and error mapping.
frontend/src/lib/apiClient.js	Adds fetchGitLog() plus normalization helpers for commits/files.
frontend/src/lib/dashboardStore.js	Replaces metrics-summary loading with git-log loading + auto-refresh + event-triggered refresh.
frontend/src/lib/conventionalCommit.js	Adds conventional-commit subject parser and type→badge-class mapping.
frontend/src/views/Dashboard.svelte	Replaces “API metrics” section with “Git log” section and styles + conventional badges.
frontend/tests/apiClient.test.js	Adds a test for fetchGitLog() normalization and request URL.
frontend/tests/dashboardStore.test.js	Updates dashboard store tests to use git log loading and auto-refresh instead of metrics.
frontend/tests/dashboard.test.js	Adds UI test coverage for rendering git log entries in the dashboard view.
frontend/tests/conventionalCommit.test.js	Adds unit tests for conventional-commit parsing helper.
docs/reference/http-api.md	Documents /api/git/log endpoint behavior and example response.
AGENTS.md	Adds implementation notes for the git log dashboard feature.
.gestalt/plans/git-log-dashboard.org	Adds/updates the implementation plan for the feature.

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🎉 This PR is included in version 1.17.0 🎉

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