⚡ Bolt: hoist loadConfig out of bulk worktree creation loop

[Donach]

💡 What: Refactored applyWorktreeCreateDefaults in apps/agor-daemon/src/services/worktrees.ts to accept the pre-loaded AgorConfig instead of calling loadConfig() internally. Updated the create method to invoke loadConfig() exactly once prior to mapping through the worktree data array.
🎯 Why: loadConfig() involves a synchronous read of the ~/.agor/config.yaml file from the disk. When executing a bulk insert of N worktrees, this previously triggered N distinct file reads, leading to severe latency bottlenecks and an O(N) penalty.
📊 Impact: Reduces disk read operations from N to exactly 1 during bulk worktree creation, significantly accelerating the response time and overall latency for operations spawning numerous worktrees.
🔬 Measurement: Verify the improvement by running a bulk worktree creation request and observing latency differences, or examining filesystem strace output during the function call. Tests in @agor/daemon correctly pass with no regressions.

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PR created automatically by Jules for task 5720922110204555043 started by @Donach

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