feat: queue files for auto-simplify with session isolation (#29)

* feat(simplify): queue files for auto-simplify with new session isolation

* docs: update changelog

Author: kostyay

CHANGELOG.md

@@ -54,7 +54,13 @@ All notable changes to agent-stuff are documented here.
 
 
 
-## docs/improve-task-breakdown-guidance
+
+
+## feat/auto-simplify-session-isolation
+
+Implements session isolation for auto-triggered simplifications (#29), ensuring that files queued from the `agent_end` confirmation create a new isolated session before execution rather than running in the current context. This prevents simplification work from interfering with ongoing analysis and improves context management. The implementation queues files internally and defers their processing to the next `/simplify` invocation, which detects pending auto-simplify work and establishes a fresh session with appropriate naming before proceeding.
+
+## [1.0.17](https://github.com/kostyay/agent-stuff/pull/28) - 2026-03-07
 
 Enhanced task breakdown guidance in the ticket extension to provide agents with clearer constraints on task granularity (#28). The updated prompts now explicitly define "atomic tasks" as single, narrowly-scoped changes affecting 2-3 files or ~50 lines of code maximum, with concrete examples like individual functions, endpoints, or test files. This change addresses context window limitations by encouraging developers and AI agents to split larger tasks into smaller units, improving task completion rates and reducing incomplete work.
 

pi-extensions/simplify.ts

@@ -416,6 +416,14 @@ let hasProposedSimplify = false;
  */
 let simplifyPending = false;
 
+/**
+ * Files queued by the `agent_end` auto-simplify confirmation.
+ *
+ * When set, the next `/simplify` invocation creates a new session
+ * before running so the simplification work is isolated.
+ */
+let pendingAutoSimplifyFiles: string[] | null = null;
+
 // ---------------------------------------------------------------------------
 // Extension entry point
 // ---------------------------------------------------------------------------
@@ -440,11 +448,23 @@ export default function simplifyExtension(pi: ExtensionAPI) {
 			"Pass explicit file paths to target specific files. " +
 			"Extra text that doesn't match a file extension is forwarded as additional instructions.",
 		handler: async (args, ctx) => {
+			const notify: Notify = (msg, level) => ctx.ui.notify(msg, level);
+			const autoFiles = pendingAutoSimplifyFiles;
+			pendingAutoSimplifyFiles = null;
+
+			if (autoFiles) {
+				const result = await ctx.newSession();
+				if (result.cancelled) return;
+				pi.setSessionName("Code Simplification");
+				await triggerSimplify(pi, { files: autoFiles }, notify);
+				return;
+			}
+
 			const { files, extraInstructions } = parseArgs(args);
 			await triggerSimplify(
 				pi,
 				{ files: files.length > 0 ? files : undefined, extraInstructions },
-				(msg, level) => ctx.ui.notify(msg, level),
+				notify,
 			);
 		},
 	});
@@ -488,10 +508,7 @@ export default function simplifyExtension(pi: ExtensionAPI) {
 
 		if (!confirmed) return;
 
-		await triggerSimplify(
-			pi,
-			{ files: sourceFiles },
-			(msg, level) => ctx.ui.notify(msg, level),
-		);
+		pendingAutoSimplifyFiles = sourceFiles;
+		pi.sendUserMessage("/simplify");
 	});
 }

pi-extensions/status-bar.ts

@@ -239,7 +239,7 @@ export default function statusBarExtension(pi: ExtensionAPI) {
 
 					// --- Line 1: badge + model + context meter (left), tokens + cost (right) ---
 					const pct = ctx.getContextUsage()?.percent ?? 0;
-					const filled = Math.round(pct / 10) || 1;
+					const filled = Math.min(10, Math.round(pct / 10) || 1);
 					const model = ctx.model?.id || "no-model";
 
 					const badge = buildProfileBadge(ctx);