⚡ Bolt: [performance improvement] Batch loadConfig in worktree creation

[Donach]

💡 What

Modified applyWorktreeCreateDefaults inside apps/agor-daemon/src/services/worktrees.ts to accept the pre-loaded configuration instead of invoking loadConfig() on each call. Moved the configuration load to the start of the create() method.

🎯 Why

During bulk worktree creation (when data is an array), the original implementation invoked loadConfig() sequentially for every element. loadConfig() performs synchronous or asynchronous file reading and YAML parsing. Looping over it causes an O(N) configuration read and parse latency which severely harms performance.

📊 Impact

Reduces disk I/O and parsing overhead from O(N) to O(1) for bulk inserts, significantly accelerating bulk worktree provisioning operations. Also eliminates the need to await Promise.all locally, making the mapping fully synchronous and memory efficient.

🔬 Measurement

Run pnpm --filter @agor/daemon test -- src/services/worktrees.test.ts to verify the creation logic remains intact, while evaluating trace logs of loadConfig invocations during bulk inserts.

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PR created automatically by Jules for task 12585339605634931599 started by @Donach

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