Offer ambiguous calls at choice portals the player picks with 1–9

[valuecodes]

What

• Part 3/5 of Post-MVP additions: an ambiguous call with 2–9 candidates is no longer folded into the room's closed marker. It gets a violet choice portal that names its candidates, and the player picks one with 1–9. There is still no guessed link: walking into the frame does nothing.
• A pick pushes a call frame like a call portal does, so a return portal and Backspace come back to the choice portal. A candidate in another module has its area generated on the key press. If that area could not be generated, the prompt marks the candidate (closed) and picking it does nothing.
• The grammar counts one wall slot per choice, collapses repeats of the same candidate set within a room, and lists candidates from other modules in external and in the world map's call links. validateGraph checks choices: placed by the cluster, to === from, and 2–9 distinct known candidates.
• Calls with more than 9 candidates, and dynamic, external and unresolved calls, stay on the marker.

How to test

pnpm typecheck
pnpm lint
pnpm knip
pnpm test
pnpm build
pnpm --filter web dev   # open /?code=resolution, face the violet portal, press 2

Security review

No security-impacting changes.

🤖 Generated with Claude Code

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Codex Review Summary

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-14T07:04:33.610233Z	76b7cc5	PR opened

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Reviewed commit: 76b7cc56bd

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