fix: restore docs deleted in v0.2.3 release, add Paperclip branding

- Restored docs/ directory that was accidentally deleted by `git add -A`
  in the v0.2.3 release script
- Replaced generic "P" favicon with actual paperclip icon using brand
  primary color (#2563EB)
- Added light/dark logo SVGs for Mintlify navbar (paperclip icon + wordmark)
- Updated docs.json with logo configuration for dark/light mode
- Fixed release.sh to stage only release-related files instead of `git add -A`
  to prevent sweeping unrelated changes into release commits

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

docs/deploy/docker.md

@@ -0,0 +1,69 @@
+---
+title: Docker
+summary: Docker Compose quickstart
+---
+
+Run Paperclip in Docker without installing Node or pnpm locally.
+
+## Compose Quickstart (Recommended)
+
+```sh
+docker compose -f docker-compose.quickstart.yml up --build
+```
+
+Open [http://localhost:3100](http://localhost:3100).
+
+Defaults:
+
+- Host port: `3100`
+- Data directory: `./data/docker-paperclip`
+
+Override with environment variables:
+
+```sh
+PAPERCLIP_PORT=3200 PAPERCLIP_DATA_DIR=./data/pc \
+  docker compose -f docker-compose.quickstart.yml up --build
+```
+
+## Manual Docker Build
+
+```sh
+docker build -t paperclip-local .
+docker run --name paperclip \
+  -p 3100:3100 \
+  -e HOST=0.0.0.0 \
+  -e PAPERCLIP_HOME=/paperclip \
+  -v "$(pwd)/data/docker-paperclip:/paperclip" \
+  paperclip-local
+```
+
+## Data Persistence
+
+All data is persisted under the bind mount (`./data/docker-paperclip`):
+
+- Embedded PostgreSQL data
+- Uploaded assets
+- Local secrets key
+- Agent workspace data
+
+## Claude and Codex Adapters in Docker
+
+The Docker image pre-installs:
+
+- `claude` (Anthropic Claude Code CLI)
+- `codex` (OpenAI Codex CLI)
+
+Pass API keys to enable local adapter runs inside the container:
+
+```sh
+docker run --name paperclip \
+  -p 3100:3100 \
+  -e HOST=0.0.0.0 \
+  -e PAPERCLIP_HOME=/paperclip \
+  -e OPENAI_API_KEY=sk-... \
+  -e ANTHROPIC_API_KEY=sk-... \
+  -v "$(pwd)/data/docker-paperclip:/paperclip" \
+  paperclip-local
+```
+
+Without API keys, the app runs normally — adapter environment checks will surface missing prerequisites.