[DEV-94] Reload workspace and automation config without restarting the worker

[danii1]

Task: DEV-94

Summary

Reload validated workspace configuration without restarting the worker. This update also merges the current main branch and completes runtime reload support for estimations and other settings introduced after the original implementation.

Settings applied live

• Repository routing, labels, environment, default branches, and remote URL changes
• task_query, poll_interval, worker_task_args, and worktrees_ttl_days
• Automations and estimations, including additions, removals, enabled state, queries, schedules, and estimation concurrency
• Conflict resolution mode and schedule
• GitHub allowed repositories and mention sweeps

Existing in-flight work finishes safely while later runs use the updated configuration. Durable schedules preserve their state when unchanged and reconcile when their definitions change.

Startup-only settings

• Tracker selection and credentials loaded from .env
• Dashboard enablement and port

A change to a startup-only setting rejects the entire reload, leaving the last valid configuration active. Runtime-incompatible tracker/query changes are also rejected with restart guidance.

Reliability

• Watches the parent directory so atomic editor saves are detected
• Debounces rapid changes and supports SIGHUP as a manual reload
• Rejects malformed, schema-invalid, and semantically invalid configuration before mutating active state
• Updates existing bare-clone remotes when repository URLs change
• Dynamically enables or drains the shared run coordinator as estimation settings change

Verification

• Format, lint, and typecheck passed
• Full test suite passed across all 11 packages; @getdevintern/code: 1194 passed, 0 failed
• Full monorepo build passed

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This PR was automatically created by @devintern/code

[danii1]

🔀 This branch had merge conflicts with main; devintern resolved them and pushed the merge. Please double-check the resolution.

[danii1]

⚠️ devintern pushed a merge of main into this branch, but GitHub still reports a problem with the PR (GitHub still reports merge conflicts after the push (the base likely advanced again); re-run resolve-conflicts). The merge commit is on the branch — please re-run conflict resolution or check the PR state manually.

[danii1]

🔀 This branch had merge conflicts with main; devintern resolved them and pushed the merge. Please double-check the resolution.

[danii1]

🔀 This branch had merge conflicts with main; devintern resolved them and pushed the merge. Please double-check the resolution.