Three-part fix:
dedup.py: Pass 1 exact-merge now skips nodes with an empty source_file.
Previously all no-source_file nodes with the same label landed in one
bucket and were merged, destroying distinct symbols (third-party deps,
standalone functions) that happened to share a short name.
update.md (skillgen + all 13 host variants): the --update merge now
passes both deleted AND changed files to prune_sources, mirroring what
watch._rebuild_code already does correctly. Old nodes for re-extracted
files are pruned before fresh AST is inserted — no fuzzy reconciliation
needed, no cross-file collapse possible.
export.py: anti-shrink guard message now names fuzzy dedup as a
possible cause (not only "missing chunk files"), and advises a full
rebuild as the safe recovery path.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
All-platform progressive-disclosure skill split + generator (addresses #1106).
Splits each platform's skill into a lean core (~615 lines, full default pipeline inline) + on-demand references/, generated from a single source via tools/skillgen with a CI/pre-commit drift gate. 13 hosts split, aider/devin stay monoliths. Also fixes the stale bare-path bugs across the previously hand-maintained variants and moves the always-on blocks into packaged markdown.
Verified: all 5 generator guards pass, byte-verbatim load-bearing slices, lean cores self-sufficient on the default path across all 13 split hosts, references gated to non-default branches, description preserves the graphify-out-query-first clause. Supersedes #1119 (Claude-first subset).
Known follow-up applied on top: harden _always_on() against a missing packaged file so a partial install can't brick the CLI.
