refactor(vault): Phase 4 — 06_Metadata slimming 42 → 8

Keep (8 files, all wired to .obsidian):
- Templates: Daily Note Template, Project Template, book-note, quick-note
- Reference: PARA_METHOD, GIT_WORKFLOW, TROUBLESHOOTING
- SECURITY_ROTATION_LOG_2026-02

Delete (27 files): upstream claudesidian remnants (CHANGELOG, CONTRIBUTING,
CLAUDE-BOOTSTRAP, etc.), 4 workflow docs, review reports, improvement plans,
Hermes templates, duplicate/unwired templates

Archive to 04_Archive/Metadata-Docs (8 files): review reports, plugin manuals,
DAILY_NOTE_GUIDE, Common Claude Code Prompts

.obsidian/plugins/obsidian-local-rest-api/styles.css

@@ -30,6 +30,7 @@ div.obsidian-local-rest-api-content pre {
   background-color: var(--background-modifier-cover);
   font-family: monospace;
   user-select: all;
+  overflow-x: auto;
 }
 
 div.obsidian-local-rest-api-content p {
@@ -104,6 +105,13 @@ div.obsidian-local-rest-api-content div.certificate-regeneration-recommended {
   border: 2px solid #ffff00;
 }
 
+/* Informational, not a warning: the certificate still works, an update exists. */
+div.obsidian-local-rest-api-content div.certificate-update-available {
+  padding: 10px 20px;
+  border: 1px solid var(--background-modifier-border);
+  color: var(--text-muted);
+}
+
 div.obsidian-local-rest-api-content table.api-urls tr {
   width: 100%;
 }