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Guardex advertised task-size tiers, but branch start still treated tier selection as a no-op during OpenSpec auto-bootstrap. Codex launches also lacked a lightweight routing gate, so small asks paid the OMX/T3 setup cost and active-session records could not explain why a sandbox was caveman or OMX. This wires real T0/T1/T2/T3 branch-start scaffolding, adds Codex-side task routing plus routing metadata, and updates the focused regression suite and change record so the bootstrap path stays consistent without changing the documented default auto-init toggle. Constraint: gx branch start must preserve the documented default GUARDEX_OPENSPEC_AUTO_INIT=false behavior Rejected: Make branch-start auto-bootstrap true by default | breaks the current repo contract and existing setup coverage Confidence: high Scope-risk: moderate Directive: Keep branch-start tier semantics, codex-agent routing heuristics, and session-schema metadata in sync when adding new task-size keywords or tiers Tested: node --test test/branch.test.js test/sandbox.test.js test/vscode-active-agents-session-state.test.js; openspec validate agent-codex-codex-session-task-mode-decider-2026-04-22-12-16 --type change --strict; openspec validate --specs; git diff --check Not-tested: live Codex CLI launch against a real operator task outside the focused harness
NagyVikt
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Automated by gx branch finish (PR flow).