fix: remove the dangling Ruflo reference pointer #307

Why

claude/ruflo-reference.md points at ~/.config/ruflo/ruflo-reference-full.md, which nothing deploys (prerequisite A).

In scope

Remove the pointer at claude/ruflo-reference.md lines 2 and 31; add a guard test.

Out of scope

Restoring the full reference file.

Acceptance criteria

• No shipped guidance names ~/.config/ruflo/ruflo-reference-full.md
• A guard test fails if shipped guidance names a path that nothing deploys

Dependencies

Blocked by: None

Blocks: #320

Plan

• Release: 4.0.0-alpha.61
• Size: size:S · Workstream: ws:remediation
• Epic: chore: exit release 4.0.0-alpha.61 (epic) #294
• Card: A61-01 in the card inventory
• Sources: Design (docs(plans): project-scoped management design and its prerequisites #289) Prerequisites; docs/plans/2026-10-01-prereq-ruflo-reference-pointer.md

Verification

• node scripts/run-tests.mjs focus (new guard tests)
• pnpm run lint:md