The skip loop only matched `- ` (no indent) but YAML list items are
commonly written as ` - item` (2-space indent). This caused old list
items to persist alongside new ones, corrupting frontmatter on merge.
Fix: consume any line starting with space or dash as part of the current
field's value block.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Two fixes from Ganymede review:
1. CRITICAL: blank line before closing --- compounded on repeat reweaves.
Body starts with \n---, so \n{body} created \n\n---. Fixed by checking
body prefix.
2. Replaced yaml.dump round-trip with _serialize_edge_fields() that splices
only edge arrays into raw frontmatter text. Non-edge fields (title,
confidence, type, quotes, flow styles) stay byte-identical to main HEAD.
_parse_yaml_frontmatter now returns 3-tuple: (dict, raw_fm_text, body).
_serialize_frontmatter takes (raw_fm_text, merged_edges_dict, body).
26 tests pass including idempotency (5x serialize), formatting preservation,
and no-blank-line regression test.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Reweave PRs modify existing files (appending YAML edges). Cherry-pick
fails ~75% when main moves between PR creation and merge.
_merge_reweave_pr() reads each changed file from both main HEAD and
branch HEAD, unions the edge arrays (order-preserving, main-first),
and writes the result. Eliminates merge conflicts structurally.
Key design decisions (Ganymede + Theseus approved):
- Order-preserving dedup: main's edges first, branch-new appended
- Superset assertion: logs warning if branch missing main edges
- Uses main's body text (reweave only touches frontmatter)
- Loud failure on parse errors (no cherry-pick fallback)
- Append-only contract: reweave adds edges, never removes
18 tests covering parse, union, serialize, superset, and full workflow.
