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+# Yoresee Doc SDK Migration Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Publish versioned Go and Node protobuf SDK repositories on Gitea and migrate backend, collab-go, frontend, and collab to consume them.
+
+**Architecture:** `proto` remains the only source of the protobuf contract. The two SDK repositories commit generated artifacts: Go stubs in the Go module root, and both ESM/Connect and CommonJS/gRPC outputs in separate Node subdirectories. Services consume tagged Gitea dependencies; existing local generation scripts and Dockerfiles remain unchanged.
+
+**Tech Stack:** Protobuf, Buf 1.72.0, `protoc-gen-go` 1.36.12, `protoc-gen-go-grpc` 1.6.2, `protoc-gen-es`, `protoc-gen-connect-es`, `grpc-tools`, Go modules, npm Git dependencies, Gitea Git over SSH.
+
+## Global Constraints
+
+- The protobuf source remains `proto/yoresee_doc/v1/yoresee_doc.proto`.
+- The Go module path is `git.yoresee.cc/YoreseeDoc/yoresee_doc_sdk_go`.
+- The Node package name is `@yoresee-doc/sdk-node`.
+- The initial SDK release is `v0.1.0`; consumers pin that tag.
+- The protobuf `go_package` is `git.yoresee.cc/YoreseeDoc/yoresee_doc_sdk_go/yoresee_doc/v1;yoreseedocpb`.
+- Do not modify `deploy/script/gen_proto.sh`, Dockerfiles, Docker Compose, `clone_all.sh`, or CI/CD configuration.
+- Do not change protobuf messages, fields, services, or runtime behavior.
+- Preserve unrelated pre-existing changes, including untracked files under `backend/`.
+- Private Gitea module/package reads require working SSH access; Go consumers use `GOPRIVATE=git.yoresee.cc/YoreseeDoc`.
+
+---
+
+### Task 1: Point The Proto Contract At The Go SDK
+
+**Files:**
+- Modify: `proto/yoresee_doc/v1/yoresee_doc.proto:5`
+- Test: proto diff and source-format checks
+
+**Interfaces:**
+- Produces the canonical Go import path used by generated SDK code and both Go services.
+
+- [ ] **Step 1: Replace the Go package option**
+
+Change the only `go_package` option to:
+
+```protobuf
+option go_package = "git.yoresee.cc/YoreseeDoc/yoresee_doc_sdk_go/yoresee_doc/v1;yoreseedocpb";
+```
+
+Do not alter any other proto line.
+
+- [ ] **Step 2: Verify the focused proto diff**
+
+Run from `proto/`:
+
+```bash
+git diff --check
+git diff -- yoresee_doc/v1/yoresee_doc.proto
+```
+
+Expected: one changed `go_package` line and no whitespace errors.
+
+- [ ] **Step 3: Commit and push the proto source change**
+
+Run from `proto/`, staging only the proto file:
+
+```bash
+git add yoresee_doc/v1/yoresee_doc.proto
+git diff --cached --check
+git commit -m "feat: point Go protobuf package at SDK"
+git push origin master
+```
+
+Record the resulting source commit with:
+
+```bash
+git rev-parse HEAD
+```
+
+The commit hash is recorded in both SDK READMEs.
+
+### Task 2: Generate And Validate The Go SDK
+
+**Files:**
+- Create: `yoresee_doc_sdk_go/go.mod`
+- Create: `yoresee_doc_sdk_go/go.sum`
+- Create: `yoresee_doc_sdk_go/buf.gen.yaml`
+- Create: `yoresee_doc_sdk_go/README.md`
+- Create: `yoresee_doc_sdk_go/yoresee_doc/v1/yoresee_doc.pb.go`
+- Create: `yoresee_doc_sdk_go/yoresee_doc/v1/yoresee_doc_grpc.pb.go`
+
+**Interfaces:**
+- Consumes the proto directory from `yoresee_doc/proto`.
+- Produces Go package `yoreseedocpb` at import path `git.yoresee.cc/YoreseeDoc/yoresee_doc_sdk_go/yoresee_doc/v1`.
+
+- [ ] **Step 1: Initialize the empty SDK repository on `master`**
+
+Run from `my-repos/`:
+
+```bash
+cd yoresee_doc_sdk_go
+git init -b master
+git remote add origin git@git.yoresee.cc:YoreseeDoc/yoresee_doc_sdk_go.git
+```
+
+If the repository already has a local Git initialization, keep it and only add the missing remote.
+
+- [ ] **Step 2: Create the Go module metadata**
+
+Create `go.mod` with:
+
+```go
+module git.yoresee.cc/YoreseeDoc/yoresee_doc_sdk_go
+
+go 1.24
+
+require (
+	google.golang.org/grpc v1.79.2
+	google.golang.org/protobuf v1.36.10
+)
+```
+
+Create `buf.gen.yaml` with:
+
+```yaml
+version: v2
+plugins:
+  - local: protoc-gen-go
+    out: .
+    opt:
+      - paths=source_relative
+  - local: protoc-gen-go-grpc
+    out: .
+    opt:
+      - paths=source_relative
+```
+
+- [ ] **Step 3: Generate both Go protobuf outputs**
+
+Run from `yoresee_doc_sdk_go/`:
+
+```bash
+export PATH="$HOME/go/bin:$PATH"
+buf generate ../yoresee_doc/proto --template buf.gen.yaml
+```
+
+Expected files:
+
+```text
+yoresee_doc/v1/yoresee_doc.pb.go
+yoresee_doc/v1/yoresee_doc_grpc.pb.go
+```
+
+- [ ] **Step 4: Resolve and test the Go module**
+
+Run from `yoresee_doc_sdk_go/`:
+
+```bash
+go mod tidy
+go test ./...
+go vet ./...
+```
+
+Expected: the generated package compiles with no test or vet failures.
+
+- [ ] **Step 5: Write the Go SDK README**
+
+Document the module path, generated package import example, source proto path, recorded proto commit hash from Task 1, generator versions, and the fact that generated artifacts are committed.
+
+- [ ] **Step 6: Commit the Go SDK artifact**
+
+Run from `yoresee_doc_sdk_go/`, staging only SDK files:
+
+```bash
+git add README.md buf.gen.yaml go.mod go.sum yoresee_doc
+git diff --cached --check
+git commit -m "feat: add generated Go protobuf SDK"
+```
+
+### Task 3: Generate And Validate The Node SDK
+
+**Files:**
+- Create: `yoresee_doc_sdk_node/package.json`
+- Create: `yoresee_doc_sdk_node/package-lock.json`
+- Create: `yoresee_doc_sdk_node/buf.gen.yaml`
+- Create: `yoresee_doc_sdk_node/README.md`
+- Create: `yoresee_doc_sdk_node/esm/index.js`
+- Create: `yoresee_doc_sdk_node/cjs/index.js`
+- Create: `yoresee_doc_sdk_node/cjs/package.json`
+- Create: `yoresee_doc_sdk_node/esm/yoresee_doc/v1/yoresee_doc_pb.js`
+- Create: `yoresee_doc_sdk_node/esm/yoresee_doc/v1/yoresee_doc_connect.js`
+- Create: `yoresee_doc_sdk_node/cjs/yoresee_doc/v1/yoresee_doc_pb.js`
+- Create: `yoresee_doc_sdk_node/cjs/yoresee_doc/v1/yoresee_doc_grpc_pb.js`
+
+**Interfaces:**
+- ESM consumers import `@yoresee-doc/sdk-node/esm/yoresee_doc/v1/...`.
+- CommonJS consumers require `@yoresee-doc/sdk-node/cjs/yoresee_doc/v1/...`.
+
+- [ ] **Step 1: Initialize the empty Node SDK repository on `master`**
+
+Run from `my-repos/`:
+
+```bash
+cd yoresee_doc_sdk_node
+git init -b master
+git remote add origin git@git.yoresee.cc:YoreseeDoc/yoresee_doc_sdk_node.git
+```
+
+If the repository already has a local Git initialization, keep it and only add the missing remote.
+
+- [ ] **Step 2: Create the Node package contract**
+
+Create `package.json` with this contract:
+
+```json
+{
+  "name": "@yoresee-doc/sdk-node",
+  "version": "0.1.0",
+  "type": "module",
+  "files": ["esm", "cjs", "README.md"],
+  "exports": {
+    ".": {
+      "import": "./esm/index.js",
+      "require": "./cjs/index.js"
+    },
+    "./esm/*": "./esm/*",
+    "./cjs/*": "./cjs/*"
+  },
+  "dependencies": {
+    "@bufbuild/protobuf": "^1.10.0",
+    "@connectrpc/connect": "^1.7.0",
+    "@grpc/grpc-js": "^1.12.0",
+    "google-protobuf": "^4.0.2"
+  }
+}
+```
+
+Create `cjs/package.json` with:
+
+```json
+{
+  "type": "commonjs"
+}
+```
+
+Create `buf.gen.yaml` with:
+
+```yaml
+version: v2
+plugins:
+  - local: protoc-gen-es
+    out: esm
+    opt:
+      - target=js
+      - import_extension=.js
+  - local: protoc-gen-connect-es
+    out: esm
+    opt:
+      - target=js
+      - import_extension=.js
+```
+
+- [ ] **Step 3: Generate the ESM/Connect outputs**
+
+Run from `yoresee_doc_sdk_node/`:
+
+```bash
+buf generate ../yoresee_doc/proto --template buf.gen.yaml
+```
+
+Expected files:
+
+```text
+esm/yoresee_doc/v1/yoresee_doc_pb.js
+esm/yoresee_doc/v1/yoresee_doc_connect.js
+```
+
+- [ ] **Step 4: Generate the CommonJS/gRPC outputs**
+
+Run from `yoresee_doc_sdk_node/`:
+
+```bash
+mkdir -p cjs
+grpc_tools_node_protoc -I ../yoresee_doc/proto \
+  --plugin=protoc-gen-grpc="$(command -v grpc_tools_node_protoc_plugin)" \
+  --plugin=protoc-gen-js="$(command -v protoc-gen-js)" \
+  --grpc_out=grpc_js:cjs \
+  --js_out=import_style=commonjs,binary:cjs \
+  ../yoresee_doc/proto/yoresee_doc/v1/yoresee_doc.proto
+```
+
+Expected files:
+
+```text
+cjs/yoresee_doc/v1/yoresee_doc_pb.js
+cjs/yoresee_doc/v1/yoresee_doc_grpc_pb.js
+```
+
+- [ ] **Step 5: Add package entry points and lock dependencies**
+
+Create `esm/index.js`:
+
+```js
+export * from './yoresee_doc/v1/yoresee_doc_pb.js'
+export * from './yoresee_doc/v1/yoresee_doc_connect.js'
+```
+
+Create `cjs/index.js`:
+
+```js
+module.exports = {
+  messages: require('./yoresee_doc/v1/yoresee_doc_pb.js'),
+  services: require('./yoresee_doc/v1/yoresee_doc_grpc_pb.js')
+}
+```
+
+Run `npm install` in the SDK root to create `package-lock.json`.
+
+- [ ] **Step 6: Validate both Node module formats**
+
+Run from `yoresee_doc_sdk_node/`:
+
+```bash
+npm pack --dry-run
+node --input-type=module -e "import('./esm/yoresee_doc/v1/yoresee_doc_pb.js').then(() => console.log('esm ok'))"
+node -e "require('./cjs/yoresee_doc/v1/yoresee_doc_pb.js'); require('./cjs/yoresee_doc/v1/yoresee_doc_grpc_pb.js'); console.log('cjs ok')"
+```
+
+The ESM check must load the generated ESM file without a module-format error. The consumer package-path checks are performed after the service dependencies are installed in Tasks 5 and 6.
+
+- [ ] **Step 7: Write and commit the Node SDK artifact**
+
+Document the source proto commit, generator versions, ESM/Connect import path, CommonJS/gRPC import path, and Gitea tag in `README.md`. Then run:
+
+```bash
+git add README.md buf.gen.yaml package.json package-lock.json esm cjs
+git diff --cached --check
+git commit -m "feat: add generated Node protobuf SDK"
+```
+
+### Task 4: Publish Both SDK Releases
+
+**Files:**
+- Modify: Git history and refs of `yoresee_doc_sdk_go`
+- Modify: Git history and refs of `yoresee_doc_sdk_node`
+
+**Interfaces:**
+- Produces `master` commits and immutable `v0.1.0` tags consumed by the services.
+
+- [ ] **Step 1: Push each SDK commit to `master`**
+
+Run separately in each SDK repository after checking the staged diff and clean working tree:
+
+```bash
+git push -u origin master
+```
+
+- [ ] **Step 2: Tag and push the initial release**
+
+Run separately in each SDK repository:
+
+```bash
+git tag -a v0.1.0 -m "Release v0.1.0"
+git push origin v0.1.0
+```
+
+- [ ] **Step 3: Verify remote refs**
+
+Run from `my-repos/`:
+
+```bash
+git ls-remote --heads git@git.yoresee.cc:YoreseeDoc/yoresee_doc_sdk_go.git
+git ls-remote --tags git@git.yoresee.cc:YoreseeDoc/yoresee_doc_sdk_go.git
+git ls-remote --heads git@git.yoresee.cc:YoreseeDoc/yoresee_doc_sdk_node.git
+git ls-remote --tags git@git.yoresee.cc:YoreseeDoc/yoresee_doc_sdk_node.git
+```
+
+Expected: `master` and `v0.1.0` exist in both repositories.
+
+### Task 5: Migrate Go Service Consumers
+
+**Files:**
+- Modify: all backend Go files importing `github.com/XingfenD/yoresee_doc/pkg/gen/yoresee_doc/v1`
+- Modify: `backend/go.mod`, `backend/go.sum`
+- Modify: all collab-go Go files importing `github.com/XingfenD/yoresee_doc/collab-go/pkg/gen/yoresee_doc/v1`
+- Modify: `collab-go/go.mod`, `collab-go/go.sum`
+- Do not modify: `backend/AGENTS.md`, `backend/docs/`, Dockerfiles, or generation scripts
+
+**Interfaces:**
+- Both services import `yoreseedocpb` from `git.yoresee.cc/YoreseeDoc/yoresee_doc_sdk_go/yoresee_doc/v1`.
+
+- [ ] **Step 1: Replace backend import paths**
+
+In every backend source file returned by:
+
+```bash
+git grep -l 'github.com/XingfenD/yoresee_doc/pkg/gen/yoresee_doc/v1' -- '*.go'
+```
+
+replace only the import path with:
+
+```go
+git.yoresee.cc/YoreseeDoc/yoresee_doc_sdk_go/yoresee_doc/v1
+```
+
+Preserve existing aliases such as `pb`.
+
+- [ ] **Step 2: Add the pinned Go SDK dependency to backend**
+
+Add this direct requirement to `backend/go.mod`:
+
+```go
+git.yoresee.cc/YoreseeDoc/yoresee_doc_sdk_go v0.1.0
+```
+
+Run from `backend/`:
+
+```bash
+GOPRIVATE=git.yoresee.cc/YoreseeDoc go mod tidy
+```
+
+- [ ] **Step 3: Replace collab-go import paths**
+
+In every collab-go source file returned by:
+
+```bash
+git grep -l 'github.com/XingfenD/yoresee_doc/collab-go/pkg/gen/yoresee_doc/v1' -- '*.go'
+```
+
+replace only the import path with:
+
+```go
+git.yoresee.cc/YoreseeDoc/yoresee_doc_sdk_go/yoresee_doc/v1
+```
+
+Preserve the existing `yoreseedocpb` alias.
+
+- [ ] **Step 4: Add the pinned Go SDK dependency to collab-go**
+
+Add the same direct requirement to `collab-go/go.mod`, then run from `collab-go/`:
+
+```bash
+GOPRIVATE=git.yoresee.cc/YoreseeDoc go mod tidy
+```
+
+- [ ] **Step 5: Verify old paths are gone and Go services compile**
+
+Run:
+
+```bash
+(cd backend && git grep 'github.com/XingfenD/yoresee_doc/pkg/gen/yoresee_doc/v1' -- '*.go') || true
+(cd collab-go && git grep 'github.com/XingfenD/yoresee_doc/collab-go/pkg/gen/yoresee_doc/v1' -- '*.go') || true
+(cd backend && GOPRIVATE=git.yoresee.cc/YoreseeDoc go test ./...)
+(cd collab-go && GOPRIVATE=git.yoresee.cc/YoreseeDoc go test ./...)
+```
+
+Expected: no old import matches and both modules compile against the remote SDK tag.
+
+### Task 6: Migrate Node Service Consumers
+
+**Files:**
+- Modify: `frontend/package.json`, `frontend/package-lock.json`
+- Modify: `frontend/src/services/grpc_client.js`
+- Modify: `collab/package.json`, `collab/package-lock.json`
+- Modify: `collab/src/grpc/client.js`
+- Modify: `collab/src/grpc/document.js`
+- Modify: `collab/src/grpc/system.js`
+- Do not modify: Node Dockerfiles or generation scripts
+
+**Interfaces:**
+- Frontend uses the SDK ESM/Connect subpaths.
+- Collab uses the SDK CommonJS/gRPC subpaths.
+
+- [ ] **Step 1: Add the pinned Git dependency to frontend and collab**
+
+Add this dependency to both `package.json` files:
+
+```json
+"@yoresee-doc/sdk-node": "git+ssh://git@git.yoresee.cc/YoreseeDoc/yoresee_doc_sdk_node.git#v0.1.0"
+```
+
+Run `npm install` separately in `frontend/` and `collab/` to update their lockfiles. The command requires SSH read access to Gitea.
+
+- [ ] **Step 2: Replace frontend generated imports**
+
+In `frontend/src/services/grpc_client.js`, replace:
+
+```js
+@/gen/yoresee_doc/v1/yoresee_doc_connect.js
+@/gen/yoresee_doc/v1/yoresee_doc_pb.js
+```
+
+with:
+
+```js
+@yoresee-doc/sdk-node/esm/yoresee_doc/v1/yoresee_doc_connect.js
+@yoresee-doc/sdk-node/esm/yoresee_doc/v1/yoresee_doc_pb.js
+```
+
+- [ ] **Step 3: Replace collab generated requires**
+
+In the three `collab/src/grpc/*.js` files, replace the relative `../gen/yoresee_doc/v1/` prefix with:
+
+```js
+@yoresee-doc/sdk-node/cjs/yoresee_doc/v1/
+```
+
+Keep the existing generated filenames and CommonJS `require` calls.
+
+- [ ] **Step 4: Verify Node imports and builds**
+
+Run:
+
+```bash
+(cd frontend && npm run build)
+(cd collab && node -e "require('@yoresee-doc/sdk-node/cjs/yoresee_doc/v1/yoresee_doc_pb'); require('@yoresee-doc/sdk-node/cjs/yoresee_doc/v1/yoresee_doc_grpc_pb'); console.log('collab SDK imports ok')")
+```
+
+Expected: no service imports point to local generated directories, the frontend build succeeds, and collab loads both CJS modules.
+
+### Task 7: Commit And Push Service Migrations
+
+**Files:**
+- Modify: `proto` repository history already prepared in Task 1
+- Modify: `backend` repository history
+- Modify: `collab-go` repository history
+- Modify: `frontend` repository history
+- Modify: `collab` repository history
+
+- [ ] **Step 1: Review each component diff and exclude unrelated changes**
+
+Before every commit, run in that component:
+
+```bash
+git status --short
+git diff --check
+git diff
+```
+
+In `backend`, do not stage the pre-existing untracked `AGENTS.md` or `docs/` files.
+
+- [ ] **Step 2: Commit each service migration separately**
+
+Use these commit messages and stage only the listed migration files:
+
+```text
+backend: feat: consume generated Go SDK
+collab-go: feat: consume generated Go SDK
+frontend: feat: consume generated Node SDK
+collab: feat: consume generated Node SDK
+```
+
+- [ ] **Step 3: Push each service `master` branch**
+
+Run from each service repository after its focused commit:
+
+```bash
+git push origin master
+```
+
+Do not update unrelated root gitlinks or modify deployment scripts in this task.
+
+### Task 8: Final Cross-Repository Verification
+
+**Files:**
+- Verify: both SDK repositories, `proto`, `backend`, `collab-go`, `frontend`, and `collab`
+
+- [ ] **Step 1: Verify all remotes and release refs**
+
+Run:
+
+```bash
+git ls-remote --heads git@git.yoresee.cc:YoreseeDoc/yoresee_doc_sdk_go.git
+git ls-remote --tags git@git.yoresee.cc:YoreseeDoc/yoresee_doc_sdk_go.git
+git ls-remote --heads git@git.yoresee.cc:YoreseeDoc/yoresee_doc_sdk_node.git
+git ls-remote --tags git@git.yoresee.cc:YoreseeDoc/yoresee_doc_sdk_node.git
+```
+
+- [ ] **Step 2: Verify service dependency metadata**
+
+Run:
+
+```bash
+(cd backend && git grep 'git.yoresee.cc/YoreseeDoc/yoresee_doc_sdk_go')
+(cd collab-go && git grep 'git.yoresee.cc/YoreseeDoc/yoresee_doc_sdk_go')
+(cd frontend && git grep '@yoresee-doc/sdk-node' -- package.json src)
+(cd collab && git grep '@yoresee-doc/sdk-node' -- package.json src)
+```
+
+- [ ] **Step 3: Verify clean intended worktrees**
+
+Run `git status --short` in each changed component and confirm only explicitly preserved unrelated files remain. Confirm no generated `node_modules`, secrets, or build output is staged.