feat: replaced manual debug request path with automated llm dump

- Replaced the `/debug dump-next-request` command with an updated `/dump` command that exports LLM request context to JSON sidecar files.
- Removed persistent debug path state and manual path configuration in favor of automated generation.
- Updated session logic to handle serializing LLM request context to temporary directories.
- Refactored testing suites to remove path-based debug tests and verify dynamic request file generation.

packages/coding-agent/src/modes/controllers/command-controller.ts

@@ -85,15 +85,30 @@ export class CommandController {
 		}
 	}
 
-	handleDumpCommand() {
+	async handleDumpCommand(): Promise<void> {
 		try {
 			const formatted = this.ctx.session.formatSessionAsText();
 			if (!formatted) {
 				this.ctx.showError("No messages to dump yet.");
 				return;
 			}
-			copyToClipboard(formatted);
-			this.ctx.showStatus("Session copied to clipboard");
+			// Build the LLM request JSON sidecar first so its path (and a
+			// raw-context warning) can be appended to the copied transcript.
+			let sidecarPath: string | undefined;
+			let sidecarError: string | undefined;
+			try {
+				sidecarPath = await this.ctx.session.dumpLlmRequestToTmpDir();
+			} catch (error: unknown) {
+				sidecarError = error instanceof Error ? error.message : "Unknown error";
+			}
+			const doc = sidecarPath
+				? `${formatted}\n\n---\nLLM request JSON: ${sidecarPath}\nThis file persists on disk and may contain raw context/secrets — treat accordingly.`
+				: formatted;
+			await copyToClipboard(doc);
+			const statusParts = ["Session copied to clipboard"];
+			if (sidecarPath) statusParts.push(`LLM request JSON: ${sidecarPath}`);
+			if (sidecarError) statusParts.push(`LLM request JSON unavailable: ${sidecarError}`);
+			this.ctx.showStatus(statusParts.join("\n"));
 		} catch (error: unknown) {
 			this.ctx.showError(`Failed to copy session: ${error instanceof Error ? error.message : "Unknown error"}`);
 		}