rename

Rename a feature across all Purlin artifacts in one atomic operation.

Usage

purlin:rename <old-name> <new-name>    Rename a feature

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What It Renames

1. Spec file: specs/**/<old-name>.md → specs/**/<new-name>.md
2. Proof files: <old-name>.proofs-*.json → <new-name>.proofs-*.json (same directory)
3. Receipt files: <old-name>.receipt.json → <new-name>.receipt.json (if exists)
4. Proof markers in test code: grep all test files for proof markers referencing the old name and replace:
   • Python: @pytest.mark.proof("old-name", → @pytest.mark.proof("new-name",
   • Jest: [proof:old-name: → [proof:new-name:
   • Shell: purlin_proof "old-name" → purlin_proof "new-name"
5. Feature name inside spec file: # Feature: old_name → # Feature: new_name
6. > Requires: references in other specs: grep all specs/**/*.md for > Requires: lines containing the old name, replace with new name
7. Proof file entries: inside the renamed proof JSON, update the "feature" field in each entry from old name to new name

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Steps

Step 1 — Find the Spec

Search specs/**/<old-name>.md.

• Not found: Stop with: No spec found for '<old-name>'. Verify the spec exists in specs/.
• Anchor with > Source: (external): Stop with: Cannot rename anchor '<old-name>'. Anchors with external sources are read-only and synced from that source. Rename at the source and re-sync.
• Multiple matches: List them and use AskUserQuestion to ask the user which one.
• Found: Continue.

Step 2 — Show What Will Change

Scan for all artifacts that reference the old name and present a summary:

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
⚡ RENAME: <old-name> → <new-name>

Files to rename:
  specs/auth/login.md → specs/auth/authentication.md
  specs/auth/login.proofs-unit.json → specs/auth/authentication.proofs-unit.json

Proof markers to update:
  tests/test_login.py: 5 markers
  tests/test_auth_integration.py: 2 markers

Specs referencing this feature (> Requires:):
  specs/auth/session.md
  specs/auth/password_reset.md

[y] Proceed  [n] Cancel

Waiting for your response...
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Step 3 — Wait for Approval

Use AskUserQuestion to pause and wait. Do NOT auto-proceed.

Step 4 — Execute Rename (if approved)

Perform all changes in this order:

a. Rename files — use git mv for spec, proof, and receipt files:

git mv specs/auth/login.md specs/auth/authentication.md
git mv specs/auth/login.proofs-unit.json specs/auth/authentication.proofs-unit.json
git mv specs/auth/login.receipt.json specs/auth/authentication.receipt.json  # if exists

b. Update proof markers in test files — search and replace marker strings only:

• Python: @pytest.mark.proof("old-name", → @pytest.mark.proof("new-name",
• Jest: [proof:old-name: → [proof:new-name:
• Shell: purlin_proof "old-name" → purlin_proof "new-name"

c. Update feature name inside the spec file:

• # Feature: old_name → # Feature: new_name

d. Update > Requires: in other specs:

• Replace the old name with the new name in > Requires: lines across all specs/**/*.md
• Use word-boundary matching to avoid partial replacements (e.g., renaming login must not corrupt login_oauth → newname_oauth). Match on the exact comma-separated entry.

e. Rename screenshot files (if the spec has > Visual-Reference:):

• Rename specs/<category>/screenshots/<old-name>.png → specs/<category>/screenshots/<new-name>.png (using git mv)
• Update the > Visual-Reference: path inside the spec file

f. Update "feature" field in proof JSON entries:

• Inside each renamed proof file, replace "feature": "old-name" with "feature": "new-name"

g. Run sync_status to verify everything still resolves.

h. Commit per references/commit_conventions.md: rename(<old-name>): rename to <new-name>

Step 5 — Verify

If sync_status shows issues after rename, warn the user and show the directives. Do not silently ignore resolution failures.

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Edge Cases

• Old name has underscores, new name has hyphens (or vice versa): handle both. The rename is exact string replacement — no normalization.
• Old name appears in test function names: do NOT rename test functions — only rename proof marker strings. test_login_valid() stays as-is; only proof("login", changes.
• Old name appears in code comments or docs: do NOT rename. Only rename in Purlin artifacts (specs, proofs, markers, > Requires:).
• Multiple specs match: if specs/**/login.md matches multiple files, list them and ask the user which one.
• Anchors with > Source: (external): refuse to rename — anchors with external sources are read-only and synced from that source. The rename must happen at the external source.
• > Requires: partial matches: use word-boundary matching when replacing in > Requires: lines. The old name must match as a complete comma-separated entry, not as a substring of another name.