chore: release v0.6.4

[otari-bot]

Description

Automated release PR for v0.6.4. Regenerates CHANGELOG.md from Conventional Commits via git-cliff. Merging this PR tags the squash commit v0.6.4 and publishes the GitHub Release, which triggers the Docker image build.

Release notes preview

0.6.4 - 2026-09-18

Bug Fixes

• Preserve retryable sandbox availability errors in #1233 by @hasangzl (25ad399)
• release: Mark breaking changes in the release notes in #1317 by @peteski22 (3b9a8a7)
• dashboard: Offer a fresh verification link on the unverified sign-in refusal in #1324 by @tbille (c02933b)
• clipboard: Restore cleanup when legacyCopy's select() throws in #1186 by @AmirF194 (c2bd608)
• dashboard: Preserve add-provider dialog state across tab switches in #1105 by @AloysJehwin (854d9d7)
• dashboard: Keep an API base typed before the provider's hints land in #1333 by @khaledosman (2215cc4)
• dashboard: Let the pricing review and share frames be dismissed in #936 by @mikemikimike (8d80407)
• gateway: Forward ttft_ms in hybrid-mode usage reports in #1210 by @AmirF194 (0e3a38b)
• dashboard: Render every number and cost in one locale in #1365 by @khaledosman (62cbde3)
• dashboard: Raise six icon-only buttons to the 44px touch floor in #1369 by @khaledosman (7ae245e)
• dashboard: Stop measuring layout mid-drag and leaving timers running in #1370 by @khaledosman (924a19f)
• dashboard: Use rem for confirmed arbitrary widths in #1367 by @LejeuneA (152e189)
• dashboard: Let the reader's own font size decide the root in #1372 by @khaledosman (80dba5c)

Features

• web-fetch: Part 3 activate managed Fetch in #979 by @HareeshBahuleyan (22f8d54)
• welcome: Redesign the welcome page in the dashboard's divided-surface language in #1104 by @jigjigjig (cda3c41)
• web-fetch: Part 4 add dashboard operator surfaces in #1017 by @HareeshBahuleyan (19f895e)
• keys: Put the API key format behind a port in #1375 by @tbille (b3f5f5f)

New Contributors

• @LejeuneA made their first contribution in #1367
• @hasangzl made their first contribution in #1233

Full Changelog: v0.6.3...v0.6.4

PR Type

• Infrastructure / CI

Relevant issues

Checklist

• I understand the code I am submitting.
• Documentation was updated where necessary.

AI Usage

• No AI was used.

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