v0.2.0

Changelog

• cd5c3fd build: derive UI version from the release tag
• 3312e8e fix: make left-channel discovery responsive and conflict-free
• 07f8751 test: cover message filtering, pagination cursors and chat matching
• 74522fe chore: remove dead code and clear linter/gofmt warnings
• 651ee0a refactor: centralize takeout lifecycle in withTakeout
• 29349d9 fix: isolate message view sessions from stale fetches, surface errors
• f1a8416 fix: check export writes and remove partial files on failure
• dd6dffe fix: recover from AUTH_RESTART during sign-in and 2FA
• 01ea775 fix: advance pagination by raw message IDs
• 661579c fix: surface silent failures and drop actions that cannot work
• e103bba fix: delete only messages positively confirmed as own
• 3eb9a64 fix: honor context cancellation in background workers
• 3f87033 fix: route all search and history calls through FLOOD_WAIT retry
• eefe10d fix: match chats by (ID, Type) and dedup chat/channel ID spaces