add qa_agent prompt

refactor: fix error handling, extract shared hooks, centralize theme colors

refactor: centralize colors, extract components, adopt ui primitives, add DM store

docs: add MIT license

fix: stabilize flaky tests and auto-seed DB on dev start

fix: Bugs #7,9,11 — file upload button, channel files panel, sidebar files view

feat: Bug #6 — schedule message for later (frontend + backend)

fix: Bug #13 — add pins and files headers to DM conversations

fix: Bug #12 — show member avatars in channel header

fix: Bug #15 — open images in lightbox modal instead of new tab

fix: Bug #5 — styled Add Link modal matching Slack design

fix: Bugs #1-4 — reposition toolbar, remove outline, add code buttons, remove unsupported icons

fix: Bug #8 — pin/unpin messages update in real-time via WebSocket

fix: Bugs #10,14,16 — remove redundant headers, restore profile email, remove home icon

adding bug prompt for example