feat(skills): add human-openable fit prechecks

[Aymericr]

A furniture-fit agent report can contain exact rectangular dimensions but previously had no safe way to hand those values to a human. This adds a bounded no-sign-in calculator link with entry=agent_report, while keeping project, scene identifiers, identity, credentials, and scene-backed evidence out of the URL.

The skill emits the link only after the user requests or approves sending the measurements to Pascal. It omits links for ambiguous, irregular, over-limit, directional-clearance, or scene-dependent conclusions; distinguishes uniform room-boundary clearance from MCP item spacing; and warns that visible query measurements can remain in browser history and service request logs.

Validation:

• bun scripts/validate-skills.ts
• claude plugin validate . --strict
• focused Biome check
• independent Claude Fable 5.1 review with all P1/P2 findings addressed in the current head

---

Note

Medium Risk
Agents may transmit user measurements via external URLs; incorrect eligibility or query construction could mislead users or weaken the stated privacy boundaries, though validation and explicit omit rules mitigate this.

Overview
furniture-fit can now include an Open dimension-only footprint pre-check link—a fixed-shape, no-sign-in calculator URL with entry=agent_report and only room/item dimensions, uniform clearance, unit, and shared=1. The skill treats it as separate from the scene-backed verdict, requires user request or consent before emitting it, and marks it unavailable when inputs are irregular, asymmetric, over-limit, ambiguous, or when an empty-room link would contradict scene-specific evidence (collisions, pose, doors, etc.).

Documentation and examples are updated (report-template.md, new no-sign-in-dimension-precheck.md, insufficient-evidence excerpt), plus five eval cases covering happy path and omit scenarios. validate-skills.ts now enforces the canonical URL shape, query keys, bounds, and required privacy/copy boundaries in SKILL.md. Plugin manifests and furniture-fit metadata bump to 0.1.8 / 0.1.4.

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[pascal]

I hit an error while handling your request (Model unavailable on AI Gateway free tier: Free tier users do not have access to this model. Upgrade to paid credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up for unrestricted…).

Please try again, rephrase, or reach out if it keeps failing.

Error id: 4a952868-7d83-4794-bdba-a81b00359403

[cursor]

Cursor Bugbot has reviewed your changes using high effort and found 1 potential issue.

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[cursor]

Precheck mixes incompatible measurement units

Medium Severity

The pre-check URL has a single unit for every numeric field, but the construction rule keeps exact cm or in values and converts meters to centimeters independently. Room, item, or clearance from different source units can be written into one link, so the calculator evaluates the wrong geometry.

Additional Locations (1)

• skills/furniture-fit/references/report-template.md#L77-L83

 

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