chore: install via pnpm + polyfill depuis Gitea (git-https) + lien local réactif

Passe l'installation de bun à pnpm (runtime/build/test restent bun).
Dépendance prod @ng-eventually/client résolue depuis le Gitea public en
git+https (committée, reproductible via pnpm-lock.yaml). Script
link:polyfill (S2 copie-overlay + watcher) pour un lien local réactif
préservant l'instance @ng-org unique. bun (peer de bun-plugin-tailwind)
approuvé au build (pnpm.onlyBuiltDependencies) pour que
node_modules/.bin/bun soit un vrai binaire. Dockerfile: install pnpm
avec git + node dans l'image, runtime bun inchangé. Doctrine tech-stack
(deployment, stack-and-commands) mise à jour.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014GbGgNEHRejVKoREvFuDFg

Dockerfile

@@ -1,11 +1,19 @@
-# Use the official Bun image
+# Use the official Bun image (runtime stays Bun; only install moves to pnpm)
 FROM oven/bun:1-alpine AS base
 WORKDIR /app
 
-# Install dependencies
+# Install dependencies with pnpm.
+# - git: the @ng-eventually/client polyfill is a git+https (public Gitea) dependency → no auth.
+# - nodejs + npm: pnpm is a Node CLI; we pin the exact pnpm version via `npm i -g`
+#   (Alpine's nodejs package does not bundle corepack).
+# The `bun` npm peer (pulled by bun-plugin-tailwind) is approved to build in package.json
+# (pnpm.onlyBuiltDependencies) so node_modules/.bin/bun is a real binary — required because
+# `bun run start` puts node_modules/.bin ahead of PATH.
 FROM base AS install
-COPY package.json bun.lock ./
-RUN bun install --frozen-lockfile
+RUN apk add --no-cache git nodejs npm \
+    && npm install -g pnpm@10.26.0
+COPY package.json pnpm-lock.yaml ./
+RUN pnpm install --frozen-lockfile
 
 # Copy source code and build assets
 FROM base AS release