[codex] Remove auto placement

[techulus-agent]

Summary

Removes automatic server placement and makes explicit per-server replica assignments the only deployment path.

Changes

• Removed the resource-aware placement planner and automatic replica replacement helpers.
• Removed the auto_place service schema field and server-side actions that toggled automatic placement.
• Updated rollout, build-completion, scheduler, restore, and config-diff paths to rely on configured service_replicas only.
• Simplified the replicas UI to always show manual per-server replica controls.
• Removed workload placement exclusion settings and forPlacement server filtering.
• Updated service placement docs to describe manual placement only.

Validation

• pnpm exec tsc --noEmit
• pnpm --dir web exec biome check on the touched web files
• git diff --check
• Full pnpm exec biome check . still reports existing repo-wide lint/import-order issues outside this PR's touched scope.

[mintlify]

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Project	Status	Preview	Updated (UTC)
techulus-cloud	🟢 Ready	View Preview	Jun 23, 2026, 8:20 AM

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