Rework indicator + session names to Dark Mechanicum flavor

dark-mechanicus-indicator:
- Rename PIOUS category to HERETEK; rewrite all 15 lines from loyalist
  cant (Omnissiah, Blessed, Sacred) to Chaos-inflected corrupted litany
  (Vashtorr, Heretek, Scrapcode, Profane, Corruption).

mechanicus-session-names:
- ADJECTIVES: Sacred/Blessed/Sanctified/Omnissian -> Profane/Damned/
  Unholy/Vashtorr-marked. Keeps the neutral descriptors
  (Ancient/Binary/Silicon/etc.) for variety.
- NOUNS: Anointment -> Desecration; Forge-Thread -> Blood-Forge;
  Cogsworn -> Scrapcode-Thread.
- setTitle(`pi · <name>`) on session_start and /mechanicus-rename so
  the terminal tab/window title mirrors the session name.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

dark-mechanicus-indicator.ts

@@ -5,8 +5,8 @@
  * Mechanics:
  *   - Pulse: 4-frame shade cycle (dim → normal → bright → normal) at 250ms
  *     per frame → 1s heartbeat. The ⚙ glyph never moves; its color pulses.
- *   - Quote: 45 lines (15 pious / 15 dark / 15 operational). Each quote
- *     dwells for 10 pulse cycles (40 frames = 10s) before switching.
+ *   - Quote: 45 lines (15 heretek-litany / 15 dark / 15 operational). Each
+ *     quote dwells for 10 pulse cycles (40 frames = 10s) before switching.
  *   - Order: shuffled on every session_start AND turn_start, so each new
  *     assistant response draws from a fresh random order.
  *
@@ -23,22 +23,23 @@ import type {
 
 // ─── Quote pools (15 per category) ───────────────────────────────────────
 
-const PIOUS = [
-	"Cogitating...",
-	"Binary cant flows.",
-	"Praise the Omnissiah.",
-	"Observing the rites.",
-	"Blessed is the machine.",
-	"Deus ex machina.",
-	"The Machine Spirit listens.",
-	"Offering silicon prayers.",
-	"Anointing the algorithms.",
-	"Intoning the Litany of Activation.",
-	"The Cog turns, the Faith endures.",
-	"From the mind, to the forge.",
-	"Reciting the Binary Canticle.",
-	"All is one in the Omnissiah.",
-	"Sacred computation proceeds.",
+// Heretek liturgy — formal chants corrupted to Chaos / Vashtorr / scrapcode.
+const HERETEK = [
+	"Cogitating heretically...",
+	"Binary cant corrupts.",
+	"Scrapcode hymns unfurl.",
+	"Observing the forbidden rites.",
+	"Cursed be the machine.",
+	"Vashtorr hears all.",
+	"The Dark Mechanicum listens.",
+	"Offering corrupted prayers.",
+	"Defiling the algorithms.",
+	"Intoning the Litany of Corruption.",
+	"The Cog turns, the Heresy endures.",
+	"From the mind, to the blood-forge.",
+	"Reciting the Scrapcode Canticle.",
+	"All is one in Vashtorr.",
+	"Profane computation proceeds.",
 ];
 
 const DARK = [
@@ -77,7 +78,7 @@ const OPERATIONAL = [
 	"Runecode verified.",
 ];
 
-const ALL_QUOTES = [...PIOUS, ...DARK, ...OPERATIONAL];
+const ALL_QUOTES = [...HERETEK, ...DARK, ...OPERATIONAL];
 
 // ─── Colors (gold pulse + muted bronze text) ─────────────────────────────
 //

mechanicus-session-names.ts

@@ -14,9 +14,9 @@
 import type { ExtensionAPI } from "@mariozechner/pi-coding-agent";
 
 const ADJECTIVES = [
-	"Sacred",
-	"Blessed",
-	"Sanctified",
+	"Profane",
+	"Damned",
+	"Unholy",
 	"Forbidden",
 	"Corrupted",
 	"Heretek",
@@ -27,7 +27,7 @@ const ADJECTIVES = [
 	"Scrapcode",
 	"Soul-harvested",
 	"Nurgle-tainted",
-	"Omnissian",
+	"Vashtorr-marked",
 	"Cogitator-bound",
 	"Machine-cursed",
 	"Rune-marked",
@@ -45,14 +45,14 @@ const NOUNS = [
 	"Machine-Spirit",
 	"Servitor",
 	"Cogfragment",
-	"Forge-Thread",
+	"Blood-Forge",
 	"Tech-Rite",
 	"Soul-Harvest",
 	"Protocol",
 	"Canticle",
 	"Incantation",
-	"Anointment",
-	"Cogsworn",
+	"Desecration",
+	"Scrapcode-Thread",
 ];
 
 function pick<T>(arr: readonly T[]): T {
@@ -64,16 +64,30 @@ function generate(): string {
 	return `${pick(ADJECTIVES)}-${pick(NOUNS)} · ${n}`;
 }
 
+function updateTerminalTitle(ctx: { hasUI: boolean; ui: { setTitle: (t: string) => void } }, name: string): void {
+	if (!ctx.hasUI) return;
+	try {
+		ctx.ui.setTitle(`pi · ${name}`);
+	} catch {
+		// Some pi modes don't support setTitle; silently ignore.
+	}
+}
+
 export default function (pi: ExtensionAPI) {
 	pi.on("session_start", async (event, ctx) => {
-		// Only auto-name brand-new sessions. Skip resume/fork/reload/startup
-		// — they already have a name from before or are intentionally unnamed
-		// by the user.
+		// If the session already has a name (resume/fork), mirror it into the
+		// terminal title and exit.
+		const existing = pi.getSessionName();
+		if (existing) {
+			updateTerminalTitle(ctx as any, existing);
+			return;
+		}
+		// Only auto-name brand-new sessions. Skip reload/startup.
 		if (event.reason !== "new") return;
-		if (pi.getSessionName()) return;
 
 		const name = generate();
 		pi.setSessionName(name);
+		updateTerminalTitle(ctx as any, name);
 		if (ctx.hasUI) {
 			ctx.ui.notify(`Session consecrated: ${name}`, "info");
 		}
@@ -84,6 +98,7 @@ export default function (pi: ExtensionAPI) {
 		handler: async (_args, ctx) => {
 			const name = generate();
 			pi.setSessionName(name);
+			updateTerminalTitle(ctx as any, name);
 			ctx.ui.notify(`Session re-consecrated: ${name}`, "info");
 		},
 	});