feat: add integrations for GitHub

[martian56]

This pull request overhauls the GitHub issue and pull request templates to provide clearer, more structured, and user-friendly forms for reporting bugs, requesting features, tracking documentation issues, and managing chores or technical debt. It replaces the old Markdown-based templates with new YAML-based forms, introduces specialized PR templates for bugfixes, features, and refactors, and adds configuration to guide users toward the right channels for security and discussion.

The most important changes are:

Issue templates modernization and expansion:

• Replaces old Markdown issue templates (bug_report.md, feature_request.md) with detailed YAML forms (bug_report.yml, feature_request.yml) that use dropdowns, checkboxes, and required fields to gather more actionable information for bug reports and feature requests. [1] [2] [3] [4]
• Adds new templates for documentation issues (documentation.yml) and chores/technical debt (chore.yml), each tailored to their specific needs. [1] [2]

Pull request templates:

• Introduces dedicated PR templates for bugfixes (bugfix.md), features (feature.md), and refactors (refactor.md), each with sections for root cause analysis, design reasoning, test plans, and checklists to improve review quality and consistency. [1] [2] [3]

Repository configuration and guidance:

• Adds .github/ISSUE_TEMPLATE/config.yml to disable blank issues and provide direct links for security disclosures and general questions/discussions, ensuring users use the correct channels.

These changes collectively improve issue triage, bug reproduction, feature scoping, and code review clarity, making the contribution process smoother for both maintainers and contributors.

Closes #93

[Copilot]

Pull request overview

This PR adds end-to-end GitHub integration support (API + UI) including GitHub App installation, repository sync settings, PR↔issue linking, an issue activity feed, and comment reactions; it also modernizes GitHub issue/PR templates for the repository.

Changes:

• Adds backend integration services/models/routes and a DB migration to support GitHub App installs, repo sync configuration, PR link tracking, webhook logging, issue activity, and comment reactions.
• Adds UI service clients and new UI components/pages for instance/workspace integration management plus new issue layouts (list/board/spreadsheet/calendar/gantt), PR sidebar/badges, activity feed, TipTap description editor enhancements, and comment reactions.
• Replaces/introduces GitHub issue & PR templates (YAML issue forms + multiple PR templates) and updates repo config (.gitignore, issue template config).

Reviewed changes

Copilot reviewed 75 out of 77 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
ui/src/services/issueService.ts	Adds description_html alias typing and an issue activities fetcher.
ui/src/services/integrationService.ts	New UI API client for integrations + GitHub sync/link/summary endpoints and install URL builder.
ui/src/services/index.ts	Exports integrationService.
ui/src/services/commentService.ts	Adds comment access on create and reactions CRUD endpoints.
ui/src/routes/index.tsx	Adds instance-admin integrations routes/pages.
ui/src/pages/instance-admin/index.ts	Re-exports new instance-admin integration pages.
ui/src/pages/instance-admin/InstanceAdminIntegrationsPage.tsx	New instance-admin integrations landing page (GitHub config status + link to config).
ui/src/pages/SettingsPage.tsx	Adds workspace “Integrations” section (replaces billing placeholder).
ui/src/pages/ProjectsListPage.tsx	Minor card styling adjustment (adds border).
ui/src/pages/BoardPage.tsx	Replaces legacy board page with redirect to ?layout=board.
ui/src/lib/issueRowHelpers.ts	Helper to map assignee IDs to lightweight member data for row rendering.
ui/src/components/work-item/layouts/IssueLayoutTypes.ts	Introduces shared issue layout types + layout parsing helpers.
ui/src/components/work-item/layouts/IssueLayoutSpreadsheet.tsx	New spreadsheet issue layout rendering as a table.
ui/src/components/work-item/layouts/IssueLayoutList.tsx	New list layout component using grouped issues + shared row cells.
ui/src/components/work-item/layouts/IssueLayoutGantt.tsx	New lightweight gantt layout based on start/target dates.
ui/src/components/work-item/layouts/IssueLayoutCalendar.tsx	New month-grid calendar layout based on target dates.
ui/src/components/work-item/layouts/IssueLayoutBoard.tsx	New board/kanban layout grouped by state.
ui/src/components/work-item/editorSlashCommands.ts	Adds TipTap “/” command palette extension.
ui/src/components/work-item/editorMention.ts	Adds TipTap @mention extension with suggestion popup + insertion helper.
ui/src/components/work-item/IssuePRSidebar.tsx	New issue detail sidebar for linked PRs (list/link/unlink).
ui/src/components/work-item/IssuePRBadge.tsx	New compact PR badge for issue rows based on aggregated PR summary.
ui/src/components/work-item/IssueActivityFeed.tsx	New issue activity feed renderer (field-change sentences + relative time).
ui/src/components/work-item/DescriptionEditor.tsx	New TipTap description editor with debounced auto-save + mentions + slash commands.
ui/src/components/work-item/CommentReactions.tsx	New minimal emoji reaction UI for comments.
ui/src/components/layout/ModuleDetailHeader.tsx	Minor theming/styling tweak for the layout toggle container.
ui/src/components/layout/InstanceAdminLayout.tsx	Adds integrations nav item + breadcrumb support for integrations subroutes.
ui/src/components/integrations/RepoSyncSettingsModal.tsx	New modal to manage GitHub repo sync behavior + state mapping.
ui/src/api/types.ts	Adds integration/GitHub/activity/reactions API response types and comment access.
ui/package.json	Adds TipTap mention + suggestion dependencies.
ui/package-lock.json	Locks new TipTap mention + suggestion dependencies.
api/migrations/000003_integrations_schema.up.sql	Adds/extends integration-related schema and seeds GitHub integration + github_app settings.
api/migrations/000003_integrations_schema.down.sql	Down migration for the above schema changes.
api/internal/store/project.go	Adds project lookup by workspace+identifier (for ref resolution).
api/internal/store/issue_activity.go	New store for issue activity persistence and listing.
api/internal/store/issue.go	Adds issue lookup by project+sequence (for ref resolution).
api/internal/store/comment_reaction.go	New store for comment reactions.
api/internal/service/issue.go	Adds activity recording for issue create/update and an activities list API.
api/internal/service/integration.go	New integration service including GitHub App settings loading and install logic.
api/internal/service/comment.go	Adds comment access control field + reactions APIs.
api/internal/router/router.go	Wires new services/stores and exposes new integration/activity/reactions/webhook routes.
api/internal/model/issue_activity.go	Adds model mapping for issue_activities.
api/internal/model/integration.go	Adds models for integrations and GitHub sync/link/webhook event tables.
api/internal/model/comment_reaction.go	Adds model mapping for comment_reactions.
api/internal/model/comment.go	Adds access field to issue comments model.
api/internal/handler/issue.go	Accepts description_html alias and adds issue activities endpoint.
api/internal/handler/instance.go	Adds github_app instance settings support + secret handling + hot reload hook.
api/internal/handler/comment.go	Adds reactions endpoints and passes comment access through create.
api/internal/github/webhook.go	Adds webhook signature verification helper.
api/internal/github/refparse_test.go	Adds tests for ref extraction and signature verification basics.
api/internal/github/refparse.go	Adds parsing for DEV-123 references + closing keyword detection and merge helpers.
api/internal/github/installations.go	Adds GitHub installation metadata and PR fetch helpers.
api/internal/github/events.go	Adds typed webhook event payload structs and helpers.
api/internal/github/client.go	Adds GitHub App installation-token client with caching and repo/comment APIs.
api/internal/github/app.go	Adds GitHub App JWT auth helper.
.gitignore	Ignores local/ and CLAUDE.md.
.github/pull_request_template.md	Overhauls default PR template to structured checklist and conventions.
.github/PULL_REQUEST_TEMPLATE/refactor.md	Adds dedicated refactor PR template.
.github/PULL_REQUEST_TEMPLATE/feature.md	Updates feature PR template (YAML-style structure).
.github/PULL_REQUEST_TEMPLATE/bugfix.md	Adds dedicated bugfix PR template.
.github/ISSUE_TEMPLATE/feature_request.yml	Adds structured feature request issue form.
.github/ISSUE_TEMPLATE/feature_request.md	Removes legacy Markdown feature request template.
.github/ISSUE_TEMPLATE/documentation.yml	Adds structured documentation issue form.
.github/ISSUE_TEMPLATE/config.yml	Disables blank issues + adds security/discussion links.
.github/ISSUE_TEMPLATE/chore.yml	Adds structured chore/tech-debt issue form.
.github/ISSUE_TEMPLATE/bug_report.yml	Adds structured bug report issue form.
.github/ISSUE_TEMPLATE/bug_report.md	Removes legacy Markdown bug report template.

Files not reviewed (1)

• ui/package-lock.json: Language not supported

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[Rafetikus]

Well done!

[nazarli-shabnam]

76 commits..