fix(opencode): run one RPC server per project directory in a shared process

packages/opencode/package.json

@@ -45,9 +45,10 @@
     "LICENSE"
   ],
   "scripts": {
-    "build": "rm -rf dist && bun build src/index.ts src/cli.ts src/sidebar-state.ts src/tui-preferences.ts src/rpc/rpc-client.ts src/rpc/port-file.ts src/rpc/protocol.ts src/rpc/rpc-dir.ts --outdir dist --target node --format esm --splitting --external @opencode-ai/plugin --minify && tsc -p tsconfig.build.json --emitDeclarationOnly && bun run build:tui",
+    "build": "rm -rf dist && bun build src/index.ts src/cli.ts src/sidebar-state.ts src/tui-preferences.ts src/rpc/rpc-client.ts src/rpc/port-file.ts src/rpc/protocol.ts src/rpc/rpc-dir.ts --outdir dist --target node --format esm --splitting --external @opencode-ai/plugin --minify && tsc -p tsconfig.build.json --emitDeclarationOnly && bun run build:tui && bun run check:bundle",
     "build:tui": "bun scripts/build-tui.ts",
     "smoke:tui": "bun scripts/smoke-tui-pack-install.ts",
+    "check:bundle": "bun scripts/check-bundle-globals.ts",
     "build:dev": "rm -rf dist && tsc -p tsconfig.build.json",
     "dev": "bun ../../scripts/dev.ts",
     "dev:clean": "bun ../../scripts/dev-clean.ts",

packages/opencode/scripts/check-bundle-globals.ts

@@ -0,0 +1,35 @@
+import { readFile, stat } from 'node:fs/promises'
+import { join } from 'node:path'
+
+const bundlePath = join(import.meta.dir, '..', 'dist', 'index.js')
+const minBundleBytes = 1024
+
+let size: number
+try {
+  size = (await stat(bundlePath)).size
+} catch {
+  throw new Error(`Bundle artifact check failed: ${bundlePath} is missing`)
+}
+
+if (size <= minBundleBytes) {
+  throw new Error(
+    `Bundle artifact check failed: ${bundlePath} is not substantial (${size} bytes)`,
+  )
+}
+
+const bundle = await readFile(bundlePath, 'utf8')
+const registryMatches = bundle.match(/__anthropicAuthRpcServers/g)?.length ?? 0
+if (registryMatches === 0) {
+  throw new Error(
+    'Bundle positive-control check failed: __anthropicAuthRpcServers is absent',
+  )
+}
+
+// This catches one identifier; the positive control makes its zero assertion meaningful, not proof that no other stale global exists.
+const singularMatches =
+  bundle.match(/__anthropicAuthRpcServer(?!s)/g)?.length ?? 0
+if (singularMatches !== 0) {
+  throw new Error(
+    `Bundle stale-global check failed: __anthropicAuthRpcServer appears ${singularMatches} time(s)`,
+  )
+}

packages/opencode/src/index.ts

@@ -181,7 +181,7 @@ import {
   stickyRouteFamilyForModel,
   tokenFingerprint,
 } from '@cortexkit/anthropic-auth-core'
-import type { Plugin } from '@opencode-ai/plugin'
+import type { Hooks, Plugin } from '@opencode-ai/plugin'
 
 import {
   applyCacheDiagnosticsOptIn,
@@ -2806,27 +2806,63 @@ const anthropicAuthPlugin = async (
   }
 
   let rpcServer: RpcServerHandle | null = null
+  let rpcDir: string | null = null
   if (ctx.directory) {
     const rpcGlobal = globalThis as {
-      __anthropicAuthRpcServer?: RpcServerHandle
+      __anthropicAuthRpcServers?: Map<string, RpcServerHandle>
     }
-    if (rpcGlobal.__anthropicAuthRpcServer) {
-      await rpcGlobal.__anthropicAuthRpcServer.stop().catch(() => {})
-      rpcGlobal.__anthropicAuthRpcServer = undefined
+    rpcDir = getRpcDir(ctx.directory)
+    const rpcServers =
+      rpcGlobal.__anthropicAuthRpcServers ?? new Map<string, RpcServerHandle>()
+    rpcGlobal.__anthropicAuthRpcServers = rpcServers
+    const previousRpcServer = rpcServers.get(rpcDir)
+    if (previousRpcServer) {
+      await previousRpcServer.stop().catch(() => {})
+      rpcServers.delete(rpcDir)
     }
     try {
       rpcServer = await startRpcServer({
-        dir: getRpcDir(ctx.directory),
+        dir: rpcDir,
         drain: drainNotifications,
         apply: applyCommand,
       })
-      rpcGlobal.__anthropicAuthRpcServer = rpcServer
+      rpcServers.set(rpcDir, rpcServer)
     } catch (error) {
       logger.warn('rpc', 'failed to start', {
         error: error instanceof Error ? error.message : String(error),
       })
     }
   }
+  const dispose: NonNullable<Hooks['dispose']> = async () => {
+    try {
+      await quotaHeaderFeedRegistry?.dispose()
+    } catch (error) {
+      logger.warn('quota-header-feed', 'failed to dispose', {
+        error: error instanceof Error ? error.message : String(error),
+      })
+    }
+    try {
+      claustrumCredentialCache?.close()
+    } catch (error) {
+      logger.warn('claustrum', 'failed to close credential cache', {
+        error: error instanceof Error ? error.message : String(error),
+      })
+    }
+    const rpcServers = (
+      globalThis as {
+        __anthropicAuthRpcServers?: Map<string, RpcServerHandle>
+      }
+    ).__anthropicAuthRpcServers
+    if (!rpcServer || !rpcDir || rpcServers?.get(rpcDir) !== rpcServer) return
+    try {
+      await rpcServer.stop()
+      if (rpcServers.get(rpcDir) === rpcServer) rpcServers.delete(rpcDir)
+    } catch (error) {
+      logger.warn('rpc', 'failed to stop', {
+        error: error instanceof Error ? error.message : String(error),
+      })
+    }
+  }
 
   // Remembers the last explicit routing decision so quota-only sidebar refreshes
   // (background main/fallback quota landing) do not reset the active account.
@@ -7600,10 +7636,6 @@ const anthropicAuthPlugin = async (
 
         return {}
       },
-      dispose: async () => {
-        await quotaHeaderFeedRegistry?.dispose()
-        claustrumCredentialCache?.close()
-      },
       methods: [
         {
           label: 'Claude Pro/Max',
@@ -7664,6 +7696,7 @@ const anthropicAuthPlugin = async (
         },
       ],
     },
+    dispose,
     __primeManager: primeManager,
     __quotaManager: quotaManager,
     __persistFallbackQuotaErrorForTest: persistFallbackQuotaError,

packages/opencode/src/rpc/notifications.ts

@@ -1,16 +1,25 @@
+import { logger } from '@cortexkit/anthropic-auth-core'
+
 import type { OpenDialogPayload, RpcNotification } from './protocol'
 
 const QUEUE_CAP = 100
 const TUI_CONNECTED_WINDOW_MS = 3_000
 
+// One queue serves every RPC server in the process, and a process can hold one server per
+// project directory. Session ids are globally unique, so a notice that carries one reaches
+// only the TUI polling for that session. A notice WITHOUT one broadcasts instead: every
+// draining TUI receives it and one session's ack does not prune it for the others — which,
+// once a process serves more than one project, would carry it across project boundaries.
+// The producer boundary therefore requires a session id; the wire field stays optional so
+// an older TUI still parses what it is sent.
 let queue: RpcNotification[] = []
 let nextId = 1
-let lastDrainAtAny = 0
 const lastDrainAtBySession = new Map<string, number>()
+let warnedAboutUnscopedDrain = false
 
 export function pushNotification(
   payload: OpenDialogPayload,
-  sessionId?: string,
+  sessionId: string,
 ): void {
   queue.push({ id: nextId++, type: 'open-dialog', payload, sessionId })
   if (queue.length > QUEUE_CAP) queue = queue.slice(queue.length - QUEUE_CAP)
@@ -21,34 +30,35 @@ export function drainNotifications(
   sessionId?: string,
 ): RpcNotification[] {
   const now = Date.now()
-  lastDrainAtAny = now
   if (sessionId !== undefined) lastDrainAtBySession.set(sessionId, now)
   const matches = (n: RpcNotification) =>
-    sessionId === undefined ||
-    n.sessionId === undefined ||
-    n.sessionId === sessionId
+    sessionId === undefined || n.sessionId === sessionId
+  if (sessionId === undefined && !warnedAboutUnscopedDrain) {
+    warnedAboutUnscopedDrain = true
+    logger.warn(
+      'rpc.notifications',
+      'drain arrived without a session id; delivery is unscoped and the queue is left intact',
+    )
+  }
   if (lastReceivedId > 0) {
     queue = queue.filter((n) => {
       if (n.id > lastReceivedId) return true
-      if (sessionId === undefined) return false
+      if (sessionId === undefined) return true
       return n.sessionId !== sessionId
     })
   }
   return queue.filter((n) => n.id > lastReceivedId && matches(n))
 }
 
-export function isTuiConnected(sessionId?: string): boolean {
+export function isTuiConnected(sessionId: string): boolean {
   const now = Date.now()
-  if (sessionId !== undefined) {
-    const at = lastDrainAtBySession.get(sessionId) ?? 0
-    return at > 0 && now - at < TUI_CONNECTED_WINDOW_MS
-  }
-  return lastDrainAtAny > 0 && now - lastDrainAtAny < TUI_CONNECTED_WINDOW_MS
+  const at = lastDrainAtBySession.get(sessionId) ?? 0
+  return at > 0 && now - at < TUI_CONNECTED_WINDOW_MS
 }
 
 export function resetNotificationsForTest(): void {
   queue = []
   nextId = 1
-  lastDrainAtAny = 0
   lastDrainAtBySession.clear()
+  warnedAboutUnscopedDrain = false
 }

packages/opencode/src/rpc/rpc-server.ts

@@ -1,5 +1,5 @@
 import { randomBytes, timingSafeEqual } from 'node:crypto'
-import { unlink } from 'node:fs/promises'
+import { readFile, unlink } from 'node:fs/promises'
 import {
   createServer,
   type IncomingMessage,
@@ -115,9 +115,16 @@ export async function startRpcServer(
     token,
     async stop() {
       await new Promise<void>((resolve) => server.close(() => resolve()))
-      await unlink(join(options.dir, `port-${process.pid}.json`)).catch(
-        () => {},
-      )
+      try {
+        const portFile = join(options.dir, `port-${process.pid}.json`)
+        const current = JSON.parse(await readFile(portFile, 'utf8')) as {
+          port?: unknown
+          pid?: unknown
+        }
+        if (current.port === port && current.pid === process.pid) {
+          await unlink(portFile)
+        }
+      } catch {}
     },
   }
 }