chore: release v0.8.1

[dtormoen]

🤖 New release

• tsk-ai: 0.8.0 -> 0.8.1

Changelog

0.8.1 - 2026-02-12

Added

• add configurable auto-cleanup settings to [server] config section
• add override options to retry command (--name, --agent, --stack, --project, --parent)
• expand repo lock scope to cover submodule fetches and post-fetch operations
• replace in-process mutex with cross-process flock(2) file locking in GitSyncManager
• auto-clean old tasks in server mode

Other

• add section descriptions to README command groups
• remove unused get_full_log from LogProcessor trait

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