fix(ext): v0.5.5 wrong-LS 자동 복구 — fixLSConnection export + 'input not registered' 감지 시 LS 재연결 + 1회 retry

.agents/references/known-issues.md

@@ -105,3 +105,4 @@
 | 12 | **새 AG 도구 추가 시 step-probe step_type 매핑 + approval-handler RPC payload 매핑 양쪽 필수** | browser_subagent Allow |
 | 13 | **WS `onConnected`에서 step-probe 상태 리셋 필수** — `stallProbed`/`lastPendingStepIndex`는 TTL 없는 영구 값 | Idle→Resume 신호 소실 |
 | 14 | **AG proto `uint32` 필드에 음수 전달 금지** — `stepIndex` 등은 `Math.max(0, ...)` 필수 | stepIndex=-1 RPC 400 |
+| 15 | **RPC "input not registered" = wrong-LS 연결** — `fixLSConnection()` 자동 재시도 필수, `lines.length<=1` 조기종료 금지 | Deriva wrong-LS (v0.5.5) |

extension/src/approval-handler.ts

@@ -426,6 +426,7 @@ export async function tryApprovalStrategies(approved: boolean, sessionId: string
                 },
             },
         ];
+        let lastRpcError = '';
         for (let i = 0; i < protoVariants.length; i++) {
             try {
                 const payload = protoVariants[i];
@@ -434,7 +435,35 @@ export async function tryApprovalStrategies(approved: boolean, sessionId: string
                 ctx.logToFile(`[APPROVAL-PROTO-${i}] ✅ SUCCESS: ${JSON.stringify(rpcResult).substring(0, 200)}`);
                 return `RPC-PROTO-${i}:HandleCascadeUserInteraction(${typeLower})`;
             } catch (e: any) {
-                ctx.logToFile(`[APPROVAL-PROTO-${i}] ❌ ${e.message.substring(0, 300)}`);
+                lastRpcError = e.message || '';
+                ctx.logToFile(`[APPROVAL-PROTO-${i}] ❌ ${lastRpcError.substring(0, 300)}`);
+            }
+        }
+
+        // ── Auto-recovery: wrong-LS detection ──────────────────────
+        // All 3 proto variants failed. If the error is "input not registered",
+        // SDK is likely connected to wrong LS process. Attempt fixLSConnection
+        // and retry ONE time to avoid permanent failure.
+        if (ctx.fixLSConnection && lastRpcError.includes('input not registered')) {
+            ctx.logToFile('[APPROVAL] ⚠️ wrong-LS detected ("input not registered"), attempting LS fix...');
+            try {
+                const lsChanged = await ctx.fixLSConnection();
+                if (lsChanged) {
+                    ctx.logToFile('[APPROVAL] LS reconnected — retrying first proto variant...');
+                    try {
+                        const retryPayload = protoVariants[0];
+                        ctx.logToFile(`[APPROVAL-RETRY] HandleCascadeUserInteraction(${JSON.stringify(retryPayload).substring(0, 250)})`);
+                        const retryResult = await ctx.sdk.ls.rawRPC('HandleCascadeUserInteraction', retryPayload);
+                        ctx.logToFile(`[APPROVAL-RETRY] ✅ SUCCESS: ${JSON.stringify(retryResult).substring(0, 200)}`);
+                        return `RPC-RETRY:HandleCascadeUserInteraction(${typeLower})`;
+                    } catch (retryErr: any) {
+                        ctx.logToFile(`[APPROVAL-RETRY] ❌ ${retryErr.message?.substring(0, 200)}`);
+                    }
+                } else {
+                    ctx.logToFile('[APPROVAL] LS not changed — already on correct port or fix unavailable');
+                }
+            } catch (fixErr: any) {
+                ctx.logToFile(`[APPROVAL] fixLSConnection error: ${fixErr.message?.substring(0, 200)}`);
             }
         }
     }

extension/src/extension.ts

@@ -210,18 +210,18 @@ async function initSDK(context: vscode.ExtensionContext): Promise<boolean> {
  * lowercased (desktop_variet_agent) → no match → falls back to first LS
  * found (wrong workspace).
  */
-async function fixLSConnection(): Promise<void> {
+export async function fixLSConnection(): Promise<boolean> {
-    if (!sdk?.ls) return;
+    if (!sdk?.ls) { logToFile('[LS-FIX] skipped: sdk.ls not available'); return false; }
     try {
         const folders = vscode.workspace.workspaceFolders;
-        if (!folders || folders.length === 0) return;
+        if (!folders || folders.length === 0) { logToFile('[LS-FIX] skipped: no workspace folders'); return false; }
 
         // Generate the workspace hint the same way SDK does, but we'll match case-insensitively
         const folder = folders[0].uri.fsPath;
         const parts = folder.replace(/\\/g, '/').split('/');
         const hint = parts.slice(-2).join('_').replace(/[-.\s]/g, '_').toLowerCase();
 
-        if (!hint) return;
+        if (!hint) { logToFile('[LS-FIX] skipped: empty hint'); return false; }
 
         // Find all language_server processes with csrf_token
         const { exec } = cp;
@@ -237,12 +237,16 @@ async function fixLSConnection(): Promise<void> {
                 { encoding: 'utf8', timeout: 15000, windowsHide: true }
             );
             output = result.stdout;
-        } catch {
+        } catch (psErr: any) {
-            return; // Can't discover processes — leave SDK's choice
+            logToFile(`[LS-FIX] skipped: PowerShell failed — ${psErr.message?.substring(0, 100)}`);
+            return false;
         }
 
         const lines = output.split('\n').filter((l: string) => l.trim().length > 0);
-        if (lines.length <= 1) return; // Only one LS — no ambiguity
+        if (lines.length === 0) { logToFile('[LS-FIX] skipped: no LS processes found'); return false; }
+        // NOTE: Do NOT skip on single LS — SDK may have fallen back to wrong LS
+        // due to case-sensitive hint mismatch, even when only one process exists.
+        logToFile(`[LS-FIX] found ${lines.length} LS process(es), hint="${hint}"`);
 
         // Find the line whose workspace_id matches our workspace (case-insensitive)
         let matchedLine: string | null = null;
@@ -261,7 +265,7 @@ async function fixLSConnection(): Promise<void> {
 
         if (!matchedLine) {
             logToFile(`[LS-FIX] No LS process matched hint="${hint}" (${lines.length} processes)`);
-            return;
+            return false;
         }
 
         // Extract port and csrf_token from matched line
@@ -271,7 +275,7 @@ async function fixLSConnection(): Promise<void> {
 
         if (!csrfMatch || !extPortMatch) {
             logToFile(`[LS-FIX] Matched LS but missing csrf/port args`);
-            return;
+            return false;
         }
 
         const csrfToken = csrfMatch[1];
@@ -281,7 +285,7 @@ async function fixLSConnection(): Promise<void> {
         // Check if SDK already connected to this LS
         if (sdk.ls.port === extPort) {
             logToFile(`[LS-FIX] SDK already on correct LS port=${extPort}`);
-            return;
+            return false;
         }
 
         // Find ConnectRPC port via netstat (same as SDK logic)
@@ -297,7 +301,7 @@ async function fixLSConnection(): Promise<void> {
             logToFile(`[LS-FIX] netstat failed, using ext_port=${extPort} for PID=${pid}`);
             sdk.ls.setConnection(extPort, csrfToken, false);
             logToFile(`[LS-FIX] ✅ Reconnected to correct LS: port=${extPort} hint="${hint}" PID=${pid}`);
-            return;
+            return true;
         }
 
         const portMatches = netstatOutput.matchAll(/127\.0\.0\.1:(\d+)/g);
@@ -338,7 +342,7 @@ async function fixLSConnection(): Promise<void> {
                     if (ok) {
                         sdk.ls.setConnection(port, csrfToken, useTls);
                         logToFile(`[LS-FIX] ✅ Reconnected to correct LS: port=${port} ${proto} hint="${hint}" PID=${pid}`);
-                        return;
+                        return true;
                     }
                 } catch { /* try next */ }
             }
@@ -347,8 +351,10 @@ async function fixLSConnection(): Promise<void> {
         // Last resort: use extension_server_port
         sdk.ls.setConnection(extPort, csrfToken, false);
         logToFile(`[LS-FIX] ✅ Reconnected via ext_port=${extPort} hint="${hint}" PID=${pid}`);
+        return true;
     } catch (err: any) {
         logToFile(`[LS-FIX] error: ${err.message}`);
+        return false;
     }
 }
 
@@ -510,6 +516,7 @@ export async function activate(context: vscode.ExtensionContext) {
             recentDiscordSentTexts,
             writeChatSnapshot,
             writeChatSnapshotWithFiles,
+            fixLSConnection,
         } as BridgeContext);
         // Start HTTP bridge with live step-probe state (prevents stale primitive bug)
         const httpBridgeCtx: HttpBridgeContext = {

extension/src/step-probe.ts

@@ -30,6 +30,7 @@ export interface BridgeContext {
     recentDiscordSentTexts: Map<string, number>;
     writeChatSnapshot: (text: string) => void;
     writeChatSnapshotWithFiles: (text: string, files: Array<{ name: string, content: string }>) => void;
+    fixLSConnection?: () => Promise<boolean>;
 }
 
 let ctx: BridgeContext;