v0.5.1

## Changelog
* 2bd4f1757106042b625b4789b60cd5a5528067db MUL-7058 feat(cli): support self-hosted Gitea release sources (#8027)
* 41db4282951c24fb9bf7c11bb0ca371c362a46f0 MUL-7324 feat(wecom): answer in the message the question opened (#8355)
* 2561b492c35aae6e4567c25836bab049400d08d4 MUL-7324 refactor(wecom): trim the stream bubble test suite and its test-only hooks (#8625)
* c375f83c2ec5f9e5eef513cbc4fa65e3c8398aea MUL-7418: add issue event and time wakeups (#8467)
* 1df4e0a8bf290732fed0d8dcb2561b6e2dd218f0 MUL-7477 fix(telegram): one reply per turn across replicas, restarts and retries (#8545)
* 3de6275eb31ad5b56e5c6a3ef0cd49987d6f3de2 MUL-7480: Link delivered steers to final replies (#8623)
* 8c9f865e3ec754d268f78a107cc4e0d2460685bd MUL-7480: Revert comment steering feature (#8648)
* 8ce795b00718bd5d527153a6ded1de36e943be12 MUL-7480: Steer active agent turns from comments (#8605)
* 8c4f4328f6e3baff08394b309034463b5db9d7af MUL-7485: fix(issues): make the cancelled-work warning specific and match its own headline (#8540)
* a51fd83072dd8f8b6e57d6896549c807643f9743 MUL-7517: clarify squad leader identity framing (#8597)
* 55bc4df1734f0adb202e10cf16e997e4edc0ed77 MUL-7518: fix(editor): keep an image's known kind when opening its preview (#8591)
* 80aa31c1ab704254f6720c7d9ee524d54e8c4236 MUL-7520 fix(agent): support OpenCode 2.x runtimes (#8596)
* 3fbffd5085171ad2ee3dcce85c54cb3c561b4b14 MUL-7521: fix(i18n): correct inbox agent activity notification hints (#8590)
* b02beb43a13141f710eb7fb287a54e243a7fbc8d MUL-7528 feat(issues): copy link to a single comment (#8607)
* 36eed42143f6d9c8c41feed1055d54a61423bc19 MUL-7533: fix(selfhost): pass MULTICA_TELEGRAM_SECRET_KEY through to the backend (#8611)
* f8c90a31d457374932ebd296490af53a1af55a81 MUL-7546 fix(issues): preserve identifier lookups across remounts (#8622)
* 6dbcc257df062e1b84f2e3f9743684542e63401c MUL-7547 fix(ci): prune the Go build cache to the run's entries and deflake telegram lease tests (#8624)
* 6b69b3710c60fba53bcb5f118fe0e85621920ee8 Revert "MUL-7517: clarify squad leader identity framing (#8597)" (#8600)
* 7d7e3e59a6d816581d1acea9f1d0b48b6332e185 Revert "Revert "fix: preserve active task intent in steer frames (#8621)" (#8…" (#8646)
* d993257f604ecd51c9c17a7bc5929e632e32491a Revert "fix: preserve active task intent in steer frames (#8621)" (#8644)
* 16cc03c89d26c31cb5a301c3ce94b62d4cb347ac Revert "fix: preserve active task intent in steer frames (#8621)" (#8645)
* 2aa20b0353fd2cd25b905a6b587013de6b14f713 ZIC-245: fix custom Oh-My-Pi runtime profile identity and discovery (#8576)
* d4267bf42b97de717bdd292e59462301e033bdd6 docs(changelog): add v0.5.1 release entry (2026-09-21) (MUL-7557) (#8640)
* 130bd5903c01735da3fd7a300ae5858cda97e29d docs(cli): drop the profile migration advice from the OMP section (#8595)
* 40a48c3c06798f89e65d958e9ff016c2685dfe54 docs(skills): add --compact to squads reference comment reads (MUL-5850) (#8631)
* 9018df3efb0b582ac2e6a75ed32b5674142a55f9 feat(projects): set a repository's checkout ref from the UI (MUL-7504) (#8592)
* 2b62b2b52ef256f1217cf97ad700b743941a2037 fix(cli): compare workdir paths in one namespace (MUL-4252, MUL-7193) (#8028)
* f41fae6b08fb734afcbd13205c0b3203dd0bc9c6 fix(cursor): own Windows background shells by launch Job membership (MUL-7417) (#8638)
* 624648cc14261320d28aed59ba1e3db418b9f4ac fix(daemon): offer a Git Bash variant of the Windows reply cookbook (MUL-7554) (#8634)
* 2eef9760f4c7239d492ed0ce484eb9a17e59dfb7 fix(issues): keep a run's comments in the order they were posted (MUL-7548) (#8626)
* 6f52e833ce1604f425a99769d93811210e73dea6 fix(projects): drop the rename pencil from local directory resources (MUL-7525) (#8603)
* ea04668c1748f84a7df61b1f8a43c806ee59e2cf fix(runtimes): drop the redundant runtime_type backfill from migration 501 (#8593)
* da5843f38a63be0a71f33c8279eee8d493f93825 fix(runtimes): stack usage KPI cards on mobile widths (#7857)
* 53578958bc88ab00cb72ce2c8fb5ce0f8cd7bd4c fix(selfhost): pass MULTICA_DINGTALK_SECRET_KEY through and guard integration keys (#8617)
* 67cec3fe3f694b7b5cc54817f4dc42e235f7062c fix(transcript): pair parallel tool results by call identity (#8567)
* bd7063299930c99f8e35ca3a9226e88ce0adfab2 fix(wakeup): end closed-issue wakeups in the application, not a trigger (MUL-7557) (#8642)
* 51e4aef22e9937f4630e8ce5256943b2a8f9ef21 fix(wecom): send a long answer in pieces instead of losing it (#8344)
* 70f900c573ebfb3bca5628257e0cfd8af8e4b511 fix: deflake wakeup and squad briefing tests, bound wakeup receipt expiry (MUL-5850) (#8633)
* b866dacd1cc5932d88863b5634826d8efb9260c6 fix: preserve active task intent in steer frames (#8621)
* 8feab0abe49a9f2d07d8ae035dab4c454999a625 perf(web): reduce route barrel imports for #8387 (#8575)
* d62048f4470e7f52525dc88a6e1913a613866499 test(handler): use database clock for timestamp fallback bounds (#8570)
* 1519006c022f8ff7aeeaf50bfaeebc704bf2781c test(perf): answer the issue wakeups request in the typing scenario (#8628)