fix: gate reporting checkpoints in ultra-flow-route and release-route (issue #14)

[LeXwDeX]

Fixes #14. Paired with runtime authoring enforcement LeXwDeX/OpenCode-GraphAgent#320 (incident 2026-08-17: an ungated ultra flow ran 75 min to completion after every decision gate returned replan).

Changes

ultra-flow-route.yaml — five checkpoint→stage edges gated on each checkpoint's verdict (vocabulary taken from each checkpoint's own output_schema.properties.verdict.enum: [continue, replan]):

• stage-design: cp-after-exploration.output.verdict == "continue"
• stage-development: cp-design-decision.output.verdict == "continue"
• stage-acceptance: cp-after-development.output.verdict == "continue"
• stage-release: cp-acceptance-decision.output.verdict == "continue"
• stage-summary: cp-after-release.output.verdict == "continue"

release-route.yaml — release-execute: release-gate.output.verdict == "proceed" (gate schema enum: [proceed, hold], default hold).

Compatibility

Condition-gating runs correctly on both current and pre-#320 runtimes, so this can land before or after the runtime PR. runtime-compat.json deliberately NOT bumped here — it waits for the merged full-runtime SHA of #320 (per issue #14).

Verification

• Shape audit (effective report_to_parent → dependent must condition on checkpoint id): ultra-flow before 5 flags → clean; release-route before 1 flag → clean; all 14 block-domain files unchanged and clean
• bun script/validate-route-catalog.ts . → 16 routes validated
• bun test script/validate-route-catalog.test.ts → 4 pass / 0 fail