docs: sync version references and add missing CLI flags

[Mossaka]

Summary

• Updated Docker image examples from v0.13.0 to latest tag in docs/usage.md
• Added dedicated --enable-api-proxy section in docs/usage.md with usage examples, rate limiting examples, and a link to api-proxy-sidecar.md

Notes on issue scope:

• docs/quickstart.md version was already at 0.18.0 (newer than the 0.16.2 target in [docs] sync version references and add missing CLI flags #836), so no change was needed
• --allow-full-filesystem-access flag referenced in [docs] sync version references and add missing CLI flags #836 does not exist in the codebase (src/cli.ts), so it was not documented. This may need a separate issue to either add the flag or remove it from the tracking issue.

Closes #836

Test plan

• npm run build passes
• npm test passes
• npm run lint passes
• Changes are docs-only, no code changes

🤖 Generated with Claude Code

[Copilot]

Pull request overview

Updates end-user documentation to better reflect current CLI capabilities and recommended image-tag usage, focusing on the API proxy sidecar and Docker image version examples.

Changes:

• Added a new --enable-api-proxy “API Proxy Sidecar” section with usage and rate-limiting examples and a link to api-proxy-sidecar.md.
• Updated pre-download Docker image examples from v0.13.0 to :latest, and added an example for pinning to v0.16.2.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

The bullet says the proxy "injects Bearer tokens for OpenAI and Anthropic APIs", but the Anthropic proxy actually authenticates via the x-api-key header (and only OpenAI/Copilot use Authorization: Bearer ...). This line should be corrected to avoid misleading users about which headers are injected for each provider.

Suggested change

	- Automatically injects Bearer tokens for OpenAI and Anthropic APIs
	- Automatically injects the correct authentication headers (Authorization: Bearer for OpenAI/Copilot, x-api-key for Anthropic)

[Copilot]

In the "Using Specific Versions" snippet, the comment "Pre-download specific version" conflicts with the commands immediately below, which pull :latest. Either change the comment to reflect pulling latest, or change these pulls to a pinned vX.Y.Z to match the section intent.

Suggested change

	# Pre-download specific version
	# Pre-download latest images

[github-actions]

Smoke Test Results (run 22932264173)

✅ GitHub MCP — #1160 fix(squid): block direct IP connections, #1099 feat: add skip-cleanup flag
✅ Playwright — github.com title verified ("GitHub · Change is constant...")
✅ File write — /tmp/gh-aw/agent/smoke-test-claude-22932264173.txt created
✅ Bash — file contents confirmed

Overall: PASS

💥 [THE END] — Illustrated by Smoke Claude for issue #1223

[github-actions]

Smoke Test Results — Run #22932264181

Test	Result
GitHub MCP (last 2 merged PRs)	✅ #1160 "fix(squid): block direct IP connections that bypass domain filtering" · #1157 "feat: combine all build-test workflows into single build-test.md"
Playwright (github.com title contains "GitHub")	✅
File write (smoke-test-copilot-22932264181.txt)	✅
Bash verify (cat file)	✅

Overall: PASS · PR by @Mossaka · no assignees

📰 BREAKING: Report filed by Smoke Copilot for issue #1223

[github-actions]

PR Titles: docs: sync version references and add missing CLI flags | test: add --skip-pull integration test
GitHub MCP merged PR review: ✅
Safeinputs gh PR list: ✅
Playwright title check: ✅
Tavily search: ❌ (Tavily MCP tool unavailable)
File write: ✅
Bash cat verify: ✅
Discussion query+comment: ✅
Build npm ci && npm run build: ✅
Overall: FAIL

🔮 The oracle has spoken through Smoke Codex for issue #1223

[github-actions]

🏗️ Build Test Suite Results

Ecosystem	Project	Build/Install	Tests	Status
Bun	elysia	✅	1/1 passed	✅ PASS
Bun	hono	✅	1/1 passed	✅ PASS
C++	fmt	✅	N/A	✅ PASS
C++	json	✅	N/A	✅ PASS
Deno	oak	N/A	1/1 passed	✅ PASS
Deno	std	N/A	1/1 passed	✅ PASS
.NET	hello-world	✅	N/A	✅ PASS
.NET	json-parse	✅	N/A	✅ PASS
Go	color	✅	1/1 passed	✅ PASS
Go	env	✅	1/1 passed	✅ PASS
Go	uuid	✅	1/1 passed	✅ PASS
Java	gson	✅	1/1 passed	✅ PASS
Java	caffeine	✅	1/1 passed	✅ PASS
Node.js	clsx	✅	All passed	✅ PASS
Node.js	execa	✅	All passed	✅ PASS
Node.js	p-limit	✅	All passed	✅ PASS
Rust	fd	✅	1/1 passed	✅ PASS
Rust	zoxide	✅	1/1 passed	✅ PASS

Overall: 8/8 ecosystems passed — ✅ PASS

Generated by Build Test Suite for issue #1223 · ◷