remove unnecessary files

wiki/log.md

@@ -1,7 +1,7 @@
 ---
 type: meta
 title: "Operation Log"
-updated: 2026-04-08
+updated: 2026-05-28
 tags:
   - meta
   - log
@@ -25,6 +25,14 @@ Parse recent entries: `grep "^## \[" wiki/log.md | head -10`
 
 ---
 
+## [2026-05-28] cleanup | Removed Claude + Obsidian ecosystem source artifacts
+- Type: source cleanup
+- Removed raw source: `.raw/claude-obsidian-ecosystem-research.md`
+- Removed source summary: `wiki/sources/claude-obsidian-ecosystem-research.md`
+- Removed generated pages: `wiki/comparisons/claude-obsidian-ecosystem.md`, `wiki/concepts/cherry-picks.md`, `wiki/entities/Ar9av-obsidian-wiki.md`, `wiki/entities/Nexus-claudesidian-mcp.md`, `wiki/entities/ballred-obsidian-claude-pkm.md`, `wiki/entities/rvk7895-llm-knowledge-bases.md`, `wiki/entities/kepano-obsidian-skills.md`, `wiki/entities/Claudian-YishenTu.md`
+- Canvas check: no `.canvas` files referenced these source-generated pages, so no canvases were removed.
+- Purpose: clear the old source-derived domain material before rebuilding the wiki around a different field.
+
 ## [2026-04-24] save | v1.6.0 public release notes (Teams, Karpathy-style)
 - Type: release doc + visual assets
 - Locations (new): `docs/releases/v1.6.0.md` (346 lines, 6 sections, Karpathy-style prose), `wiki/meta/dragonscale-mechanism-overview.svg` (4-mechanism diagram with shared .vault-meta/ gate), `wiki/meta/dragonscale-6-test-flow.svg` (validation timeline), `wiki/meta/dragonscale-frontier-graph.svg` (M4 candidate + 3 filed pages)