chore(main): release 1.4.0

[github-actions]

🤖 I have created a release beep boop

1.4.0 (2026-03-31)

Features

• add admin UI for OAuth provider configuration (GitLab + Forgejo) (dde400c)
• add link repo modal to git integration card with reliable project loading (4a35cee)
• add PR lifecycle webhook handling and activity status badges (8b51283)
• added oauth for gitlab and forgejo connection (376a5e5)
• implement Phase 4 git integrations (GitLab + Forgejo) (bb2cfe3)
• preserve PRs on repo unlink, add unlink/sync-webhook endpoints and UI (d65cdc9)

Bug Fixes

• include action in provider_event_id to allow multiple webhook events per PR (59ae09d)
• include timestamp in provider_event_id to allow repeated actions on same PR (150c154)
• mount webhook router under /api and restore webhook URL prefix (22282af)
• remove activity question mark icon, add provider to PR model, update PR cards with logo and state colors (b18b8c1)
• replace inline SVG style tag with explicit attributes to prevent global style leak (e99d18a)
• resolve oauth callback failures for forgejo integration (09a5974)
• restore webhook signature validation and sync secret on re-link (fd68839)
• split multi-column ALTER TABLE into separate statements for SQLite compatibility (587ca40)

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