fix(ci): regenerate bun.lock and disable frozen-lockfile in Dockerfiles

bun auto-enables --frozen-lockfile in CI by default. Use env var
BUN_INSTALL_FROZEN_LOCKFILE=0 to override this behavior. Also
regenerate lockfile fresh to ensure it is compatible with bun 1.3.14.

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

apps/api/Dockerfile

@@ -5,7 +5,8 @@ COPY package.json bun.lock bunfig.toml tsconfig.base.json ./
 COPY apps/api/package.json apps/api/package.json
 COPY apps/web/package.json apps/web/package.json
 COPY packages/shared/package.json packages/shared/package.json
-RUN bun install --no-frozen-lockfile --production
+ENV BUN_INSTALL_FROZEN_LOCKFILE=0
+RUN bun install --production
 
 FROM oven/bun:1.3.14 AS runner
 WORKDIR /app