chore: remove proto codegen from prod Dockerfile

AGENTS.md

@@ -7,29 +7,15 @@ Part of a multi-repo project. Parent `../AGENTS.md` has full architecture contex
 ## Build & Run
 
 ```bash
-go run main.go                       # requires generated proto stubs first
+go run main.go
 go build -o collab-go main.go
 ```
 
 Port: `1234` (override with `ADDR` env var).
 
-### Prerequisites — generated proto stubs
+### Protobuf
 
-`pkg/gen/` is gitignored. Code **will not compile** without it. Generate from the parent directory:
-
-```bash
-# Option A: parent repo script (recommended)
-bash ../deploy/script/gen_proto.sh
-
-# Option B: manual protoc (requires protoc-gen-go + protoc-gen-go-grpc)
-mkdir -p pkg/gen
-protoc -I ../proto \
-  --go_out=pkg/gen --go_opt=paths=source_relative \
-  --go-grpc_out=pkg/gen --go-grpc_opt=paths=source_relative \
-  ../proto/yoresee_doc/v1/yoresee_doc.proto
-```
-
-Install codegen tools: `go install google.golang.org/protobuf/cmd/protoc-gen-go@latest && go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest`
+Consumes Go stubs (`yoreseedocpb`) from `git.yoresee.cc/YoreseeDoc/yoresee_doc_sdk_go`, pinned to tag `v0.1.0` in `go.mod`. No local codegen required.
 
 ## Environment Variables
 
@@ -57,14 +43,13 @@ go build ./...
 - `handler/` — WebSocket upgrade, auth check, doc-existence check via gRPC, proxy to collab-core
 - `health/` — `/health`, `/readyz`, `/livez` probes (readiness checks backend gRPC)
 - `proxy/` — bidirectional WebSocket proxy to collab-core at path `/doc-{docID}`
-- `pkg/gen/` — generated protobuf stubs (gitignored)
 
 Connection flow: `Browser → /ws/doc/{docId}?token=... → collab-go (auth + gRPC doc check) → collab-core /doc-{docId}`
 
 ## Docker
 
 - `Dockerfile` — dev image, runs `go run main.go`
-- `Dockerfile.prod` — production build; **expects build context at parent directory** (`COPY collab-go/...`). Proto codegen runs inside the build.
+- `Dockerfile.prod` — production build; **expects build context at parent directory** (`COPY collab-go/...`).
 
 ## Conventions