feat: add Folo CLI app with tests

[DIYgod]

Description

This PR adds a new apps/cli package that provides an AI-agent-friendly Folo command-line client with structured JSON/table/plain outputs and consistent error envelopes. It implements auth, timeline, subscription, entry, feed, list, search, collection, OPML, and unread command groups on top of @follow-app/client-sdk. It also includes token handling improvements for encoded session tokens and cookie-compatible auth headers, plus a skill.md usage guide for agents. Tests were added with Vitest (parser/output unit tests and CLI e2e tests with isolated HOME and optional real-token integration).

PR Type

• Feature
• Bugfix
• Hotfix
• Other (please describe):

Screenshots (if UI change)

N/A

Demo Video (if new feature)

N/A

Linked Issues

N/A

Additional context

Please focus review on CLI command coverage, auth/token handling behavior, and output contract stability for automation consumers.

Changelog

• I have updated the changelog/next.md with my changes.

[safedep]

SafeDep Report Summary

⚠ 2 packages are identified as suspicious, human review is recommended.

Package Details

Package	Malware	Vulnerability	Risky License	Report
rollup @ 4.57.1 pnpm-lock.yaml				🔗
tsx @ 4.21.0 pnpm-lock.yaml apps/cli/package.json				🔗
@follow-app/client-sdk @ 0.3.92 pnpm-lock.yaml				🔗
@types/node @ 25.2.3 pnpm-lock.yaml apps/cli/package.json				🔗
bundle-require @ 5.1.0 pnpm-lock.yaml				🔗
cac @ 6.7.14 pnpm-lock.yaml				🔗
chokidar @ 4.0.3 pnpm-lock.yaml				🔗
commander @ 14.0.1 pnpm-lock.yaml apps/cli/package.json				🔗
consola @ 3.4.2 pnpm-lock.yaml				🔗
debug @ 4.4.3 pnpm-lock.yaml				🔗
esbuild @ 0.25.12 pnpm-lock.yaml				🔗
fix-dts-default-cjs-exports @ 1.0.1 pnpm-lock.yaml				🔗
jiti @ 2.6.1 pnpm-lock.yaml				🔗
joycon @ 3.1.1 pnpm-lock.yaml				🔗
lilconfig @ 3.1.3 pnpm-lock.yaml				🔗
load-tsconfig @ 0.2.5 pnpm-lock.yaml				🔗
magic-string @ 0.30.21 pnpm-lock.yaml				🔗
mlly @ 1.8.0 pnpm-lock.yaml				🔗
pathe @ 2.0.3 pnpm-lock.yaml apps/cli/package.json				🔗
picocolors @ 1.1.1 pnpm-lock.yaml				🔗
postcss @ 8.5.6 pnpm-lock.yaml				🔗
postcss-load-config @ 6.0.1 pnpm-lock.yaml				🔗
resolve-from @ 5.0.0 pnpm-lock.yaml				🔗
source-map @ 0.8.0-beta.0 pnpm-lock.yaml				🔗
sucrase @ 3.35.1 pnpm-lock.yaml				🔗
tinyexec @ 0.3.2 pnpm-lock.yaml				🔗
tinyglobby @ 0.2.15 pnpm-lock.yaml				🔗
tree-kill @ 1.2.2 pnpm-lock.yaml				🔗
tsup @ 8.5.0 pnpm-lock.yaml apps/cli/package.json				🔗
typescript @ 5.9.3 pnpm-lock.yaml				🔗
yaml @ 2.8.2 pnpm-lock.yaml				🔗

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