fix: POST for file creation (Gitea 1.25+), add edit_issue tool, persist poll state

- files.ts: Use POST for new files, PUT for updates (Gitea 1.25 requires this)
- issues.ts: Add editIssue() for state/title/body changes
- write-tools.ts: Add gitea_edit_issue tool (open/close/edit issues)
- webhook/server.ts: Persist lastPollAt to disk to prevent duplicate
  events on reload; use followUp delivery to queue events during LLM turns
- index.ts: Use deliverAs:'followUp' for sendUserMessage

pi-extension/webhook/server.ts

@@ -20,6 +20,8 @@ const POLL_INTERVAL = parseInt(process.env.PI_BOT_POLL_INTERVAL ?? "300", 10);
 const EVENT_POLL_INTERVAL = parseInt(process.env.PI_EVENT_POLL_INTERVAL ?? "60", 10);
 const BOT_USER = process.env.PI_GIT_USER ?? "";
 
+const POLL_STATE_FILE = "/home/pibot/.pi/agent/gitea-poll-state.json";
+
 let server: Server | null = null;
 let processingQueue: Array<{ event: any; timestamp: number }> = [];
 let maxQueueDepth = 50;
@@ -37,6 +39,31 @@ let pollOnlyRepos: Map<string, { addedAt: number; lastPollAt: string }> = new Ma
 /** Track all known repos so we don't re-attempt webhook install every cycle */
 let knownRepos: Set<string> = new Set();
 
+/** Load poll timestamps from disk (survives reloads) */
+async function loadPollState(): Promise<Record<string, string>> {
+	try {
+		const fs = await import("node:fs/promises");
+		const data = await fs.readFile(POLL_STATE_FILE, "utf-8");
+		return JSON.parse(data);
+	} catch {
+		return {};
+	}
+}
+
+/** Save poll timestamps to disk */
+async function savePollState(): Promise<void> {
+	try {
+		const fs = await import("node:fs/promises");
+		const state: Record<string, string> = {};
+		for (const [name, s] of pollOnlyRepos) {
+			state[name] = s.lastPollAt;
+		}
+		await fs.writeFile(POLL_STATE_FILE, JSON.stringify(state), "utf-8");
+	} catch (err) {
+		console.error("[gitea-polling] Error saving poll state:", err instanceof Error ? err.message : err);
+	}
+}
+
 export function setSendMessage(fn: (message: string) => Promise<void>) {
 	sendMessage = fn;
 }
@@ -273,6 +300,7 @@ async function discoverRepos() {
 	try {
 		const client = new GiteaClient();
 		const repos = await client.get<any[]>("/user/repos?limit=100");
+		const savedState = await loadPollState();
 
 		let newWebhooks = 0;
 		let newPollOnly = 0;
@@ -303,11 +331,11 @@ async function discoverRepos() {
 				} catch (err) {
 					if (err instanceof GiteaError && err.status === 403) {
 						// No admin access — fall back to polling
-						// Set lastPollAt to 5 minutes ago so we catch recent events
-						const fiveMinAgo = new Date(Date.now() - 5 * 60 * 1000).toISOString();
+						// Use persisted timestamp if available, otherwise 5 min ago
+						const lastPoll = savedState[name] ?? new Date(Date.now() - 5 * 60 * 1000).toISOString();
 						pollOnlyRepos.set(name, {
 							addedAt: Date.now(),
-							lastPollAt: fiveMinAgo,
+							lastPollAt: lastPoll,
 						});
 						knownRepos.add(name);
 						newPollOnly++;
@@ -319,10 +347,10 @@ async function discoverRepos() {
 				}
 			} else {
 				// No webhook URL configured — all repos are poll-only
-				const fiveMinAgo = new Date(Date.now() - 5 * 60 * 1000).toISOString();
+				const lastPoll = savedState[name] ?? new Date(Date.now() - 5 * 60 * 1000).toISOString();
 				pollOnlyRepos.set(name, {
 					addedAt: Date.now(),
-					lastPollAt: fiveMinAgo,
+					lastPollAt: lastPoll,
 				});
 				knownRepos.add(name);
 				newPollOnly++;
@@ -430,6 +458,9 @@ async function pollForEvents() {
 			console.error(`[gitea-poll-events] Error polling ${repoName}: ${err instanceof Error ? err.message : err}`);
 		}
 	}
+
+	// Persist poll timestamps
+	await savePollState();
 }
 
 // ── Public API ───────────────────────────────────────────────────────────────