notes: private Obsidian vault tracker at /trackers/notes

Vault files stay the source of truth (bind-mounted read-write at /notes):
atomic writes chowned to the vault owner, hash-checked saves (409 on a
newer file), deletes to .trash. notes.* is a full-text/link index kept
current by a recursive watcher plus a 60s rescan; live updates over the
owner-only /ws/notes channel (paths and hashes only). Wikilinks, embeds,
backlinks, tags, callouts, image paste. Owner-only everywhere (404).

src/lib/tracker-icons.ts

@@ -96,6 +96,18 @@ export const trackerIcons: Record<string, TrackerIcon> = {
 			'M20 3v4M22 5h-4M4 17v2M5 18H3'
 		]
 	},
+	notes: {
+		from: '#fde68a',
+		to: '#f59e0b',
+		ink: '#422006',
+		// notebook with a pen line
+		paths: [
+			'M6 3h11a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2H6z',
+			'M6 3v18',
+			'M4 7h3M4 12h3M4 17h3',
+			'M10 8h6M10 12h6M10 16h3'
+		]
+	},
 	health: {
 		from: '#f472b6',
 		to: '#db2777',