Refactor almost all modules

.github/workflows/ci.yml

@@ -117,6 +117,10 @@ jobs:
         working-directory: crates/agent-gateway/web
         run: pnpm build
 
+      - name: Lint WebUI
+        working-directory: crates/agent-gateway/web
+        run: pnpm lint
+
       - name: Test WebUI modules
         working-directory: crates/agent-gateway
         run: node --test test/webui/*.test.mjs web/test/*.test.mjs
@@ -138,6 +142,14 @@ jobs:
         working-directory: crates/agent-gui
         run: pnpm install --frozen-lockfile
 
+      - name: Typecheck and build GUI frontend
+        working-directory: crates/agent-gui
+        run: pnpm build
+
+      - name: Lint GUI frontend
+        working-directory: crates/agent-gui
+        run: pnpm lint
+
       - name: Test frontend modules
         working-directory: crates/agent-gui
         run: pnpm test:frontend
@@ -179,6 +191,19 @@ jobs:
           CARGO_TERM_COLOR: always
         run: cargo test --manifest-path crates/agent-gui/src-tauri/Cargo.toml chat_history --lib
 
+  mirror:
+    name: GUI/WebUI Mirror Check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+
+      - uses: actions/setup-node@v6
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+
+      - name: Check mirrored files are byte-identical
+        run: node scripts/check-mirror.mjs
+
   whitespace:
     name: Diff Hygiene
     runs-on: ubuntu-latest

crates/agent-gateway/cmd/gateway/main.go

@@ -13,6 +13,7 @@ import (
 
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/keepalive"
 	"google.golang.org/grpc/reflection"
 
 	"github.com/liveagent/agent-gateway/internal/auth"
@@ -26,19 +27,7 @@ const grpcShutdownTimeout = 3 * time.Second
 
 func main() {
 	cfg := config.Load()
-	chatEventStore, err := session.OpenSQLiteChatEventStore(cfg.ChatEventStorePath)
-	if err != nil {
-		log.Fatalf("open chat event store: %v", err)
-	}
-	defer func() {
-		if err := chatEventStore.Close(); err != nil {
-			log.Printf("close chat event store: %v", err)
-		}
-	}()
-	sm, err := session.NewManagerWithChatEventStore(chatEventStore)
-	if err != nil {
-		log.Fatalf("initialize session manager: %v", err)
-	}
+	sm := session.NewManager()
 
 	grpcServer, err := newGRPCServer(cfg, sm)
 	if err != nil {
@@ -111,6 +100,18 @@ func newGRPCServer(cfg *config.Config, sm *session.Manager) (*grpc.Server, error
 		grpc.MaxSendMsgSize(cfg.GRPCMaxMessageBytes),
 		grpc.UnaryInterceptor(auth.GRPCUnaryInterceptor(cfg.Token)),
 		grpc.StreamInterceptor(auth.GRPCStreamInterceptor(cfg.Token)),
+		// Transport-level liveness: h2 PINGs are not subject to application
+		// queue congestion, so dead links are detected even mid-stream.
+		grpc.KeepaliveParams(keepalive.ServerParameters{
+			Time:    30 * time.Second,
+			Timeout: 10 * time.Second,
+		}),
+		// The desktop GUI pings every 10-60s; MinTime must stay below its
+		// floor or grpc-go answers with a too_many_pings GOAWAY.
+		grpc.KeepaliveEnforcementPolicy(keepalive.EnforcementPolicy{
+			MinTime:             5 * time.Second,
+			PermitWithoutStream: true,
+		}),
 	}
 	if cfg.TLSCert != "" || cfg.TLSKey != "" {
 		creds, err := credentials.NewServerTLSFromFile(cfg.TLSCert, cfg.TLSKey)

crates/agent-gateway/go.mod

@@ -14,15 +14,7 @@ require (
 )
 
 require (
-	github.com/dustin/go-humanize v1.0.1 // indirect
-	github.com/mattn/go-isatty v0.0.20 // indirect
-	github.com/ncruces/go-strftime v1.0.0 // indirect
-	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
 	golang.org/x/sys v0.42.0 // indirect
 	golang.org/x/text v0.27.0 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20250804133106-a7a43d27e69b // indirect
-	modernc.org/libc v1.72.3 // indirect
-	modernc.org/mathutil v1.7.1 // indirect
-	modernc.org/memory v1.11.0 // indirect
-	modernc.org/sqlite v1.52.0 // indirect
 )

crates/agent-gateway/go.sum

@@ -1,7 +1,5 @@
 github.com/doyensec/safeurl v0.2.5 h1:kKu0JNQy0tJ8jkDyB5h6Aml9vWWniq+mpoa12EGLcOQ=
 github.com/doyensec/safeurl v0.2.5/go.mod h1:3H0cgRpPYPSpgxRRn5yGD35Ns/LgGX/BVWSBbzUqXtY=
-github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
-github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
 github.com/gabriel-vasile/mimetype v1.4.13 h1:46nXokslUBsAJE/wMsp5gtO500a4F3Nkz9Ufpk2AcUM=
 github.com/gabriel-vasile/mimetype v1.4.13/go.mod h1:d+9Oxyo1wTzWdyVUPMmXFvp4F9tea18J8ufA774AB3s=
 github.com/go-logr/logr v1.4.3 h1:CjnDlHq8ikf6E492q6eKboGOC0T8CDaOvkHCIg8idEI=
@@ -16,12 +14,6 @@ github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/gorilla/websocket v1.5.3 h1:saDtZ6Pbx/0u+bgYQ3q96pZgCzfhKXGPqt7kZ72aNNg=
 github.com/gorilla/websocket v1.5.3/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
-github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
-github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
-github.com/ncruces/go-strftime v1.0.0 h1:HMFp8mLCTPp341M/ZnA4qaf7ZlsbTc+miZjCLOFAw7w=
-github.com/ncruces/go-strftime v1.0.0/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
-github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
-github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
 github.com/tdewolff/parse/v2 v2.8.13 h1:si/8rLw5BZZTWCCiMm9A3f6x+RmqYfrkEeXCgpX5ick=
 github.com/tdewolff/parse/v2 v2.8.13/go.mod h1:XdsoSFThlVIRIajAuqz1evNY7bagZS8LBOPA3aVopwQ=
 github.com/tdewolff/test v1.0.12 h1:7F21DqIajswxuche0geHdrUZRCWE4oko4b7bcmkkrxk=
@@ -40,9 +32,6 @@ go.opentelemetry.io/otel/trace v1.37.0 h1:HLdcFNbRQBE2imdSEgm/kwqmQj1Or1l/7bW6mx
 go.opentelemetry.io/otel/trace v1.37.0/go.mod h1:TlgrlQ+PtQO5XFerSPUYG0JSgGyryXewPGyayAWSBS0=
 golang.org/x/net v0.42.0 h1:jzkYrhi3YQWD6MLBJcsklgQsoAcw89EcZbJw8Z614hs=
 golang.org/x/net v0.42.0/go.mod h1:FF1RA5d3u7nAYA4z2TkclSCKh68eSXtiFwcWQpPXdt8=
-golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.34.0 h1:H5Y5sJ2L2JRdyv7ROF1he/lPdvFsd0mJHFw2ThKHxLA=
-golang.org/x/sys v0.34.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
 golang.org/x/sys v0.42.0 h1:omrd2nAlyT5ESRdCLYdm3+fMfNFE/+Rf4bDIQImRJeo=
 golang.org/x/sys v0.42.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
 golang.org/x/text v0.27.0 h1:4fGWRpyh641NLlecmyl4LOe6yDdfaYNrGb2zdfo4JV4=
@@ -55,11 +44,3 @@ google.golang.org/grpc v1.76.0 h1:UnVkv1+uMLYXoIz6o7chp59WfQUYA2ex/BXQ9rHZu7A=
 google.golang.org/grpc v1.76.0/go.mod h1:Ju12QI8M6iQJtbcsV+awF5a4hfJMLi4X0JLo94ULZ6c=
 google.golang.org/protobuf v1.36.10 h1:AYd7cD/uASjIL6Q9LiTjz8JLcrh/88q5UObnmY3aOOE=
 google.golang.org/protobuf v1.36.10/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
-modernc.org/libc v1.72.3 h1:ZnDF4tXn4NBXFutMMQC4vtbTFSXhhKzR73fv0beZEAU=
-modernc.org/libc v1.72.3/go.mod h1:dn0dZNnnn1clLyvRxLxYExxiKRZIRENOfqQ8XEeg4Qs=
-modernc.org/mathutil v1.7.1 h1:GCZVGXdaN8gTqB1Mf/usp1Y/hSqgI2vAGGP4jZMCxOU=
-modernc.org/mathutil v1.7.1/go.mod h1:4p5IwJITfppl0G4sUEDtCr4DthTaT47/N3aT6MhfgJg=
-modernc.org/memory v1.11.0 h1:o4QC8aMQzmcwCK3t3Ux/ZHmwFPzE6hf2Y5LbkRs+hbI=
-modernc.org/memory v1.11.0/go.mod h1:/JP4VbVC+K5sU2wZi9bHoq2MAkCnrt2r98UGeSK7Mjw=
-modernc.org/sqlite v1.52.0 h1:p4dhYh2tXZCiyaqHwRVJDjIGKWyXayiQpThxgDzJaxo=
-modernc.org/sqlite v1.52.0/go.mod h1:tcNzv5p84E0skkmJn038y+hWJbLQXQqEnQfeh5r2JLM=