Replace shared_lib submodule with shared for decoupling deploy

- Swap shared_lib submodule → shared (tracking decoupling branch)
- Dockerfile: shared_lib/ → shared/, remove bp symlink hack
- entrypoint.sh: cd shared for alembic upgrade head
- CI: trigger on decoupling branch, use dynamic ref_name

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Dockerfile

@@ -3,9 +3,9 @@
 # ---------- Stage 1: Build editor JS/CSS ----------
 FROM node:20-slim AS editor-build
 WORKDIR /build
-COPY shared_lib/editor/package.json shared_lib/editor/package-lock.json* ./
+COPY shared/editor/package.json shared/editor/package-lock.json* ./
 RUN npm ci --ignore-scripts 2>/dev/null || npm install
-COPY shared_lib/editor/ ./
+COPY shared/editor/ ./
 RUN NODE_ENV=production node build.mjs
 
 # ---------- Stage 2: Python runtime ----------
@@ -25,16 +25,13 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
       postgresql-client \
     && rm -rf /var/lib/apt/lists/*
 
-COPY shared_lib/requirements.txt ./requirements.txt
+COPY shared/requirements.txt ./requirements.txt
 RUN pip install -r requirements.txt
 
 COPY . .
 
 # Copy built editor assets from stage 1
-COPY --from=editor-build /static/scripts/editor.js /static/scripts/editor.css shared_lib/static/scripts/
-
-# Link app blueprints into the shared library's namespace
-RUN rm -rf /app/shared_lib/suma_browser/app/bp && ln -s /app/bp /app/shared_lib/suma_browser/app/bp
+COPY --from=editor-build /static/scripts/editor.js /static/scripts/editor.css shared/static/scripts/
 
 # ---------- Runtime setup ----------
 COPY entrypoint.sh /usr/local/bin/entrypoint.sh