docs: update CLI commands, pricing tiers, and fix stale references

[devin-ai-integration]

Summary

Weekly documentation update based on code changes from the last 7 days. Covers seven files across CLI reference, FAQ, and developer docs.

CLI docs (cli/index.mdx):

• Added new commands: play, skill, update, shortcut
• Updated transcribe — now accepts a positional [INPUT] argument (timestamp or file path), --input gained -i short flag and --file alias
• Updated record — default --audio changed from input to dual, added --base flag
• Updated subcommand list to include all new entries

Pricing FAQ (faq/4.pricing.mdx):

• Added Lite tier ($8/month) between Free and Pro, matching packages/pricing/src/tiers.ts
• Expanded Free tier description with specific feature list

Stale name fixes (faq/7.settings.mdx, developers/16.local-models.mdx):

• hyprnote → char in Application Support paths (settings.json, model directories, huggingface download command)
• "Hyprnote provider" → "Char provider" in Cactus engine docs

Other FAQ updates:

• Removed Advanced Search references (feature was removed); search FAQ now points to ⌘K searchbar
• Keyboard shortcuts: ⌘⇧F action updated from "Open Advanced search" to "Focus Searchbar"
• AI chat reference updated to use "Charlie" name
• CLI env vars: replaced CHAR_RECORD with CHAR_BASE; fixed stale subcommand references (listen/batch/chat → transcribe/record)

Review & Testing Checklist for Human

• Verify hyprnote → char path rename is correct. The settings.json path was changed from ~/Library/Application Support/hyprnote/ to ~/Library/Application Support/char/. If the app still writes to hyprnote/ at runtime, this change is wrong and will mislead users. Check tauri.conf.json or the actual app data directory.
• Verify Lite tier description matches product intent. Feature labels were pulled from packages/pricing/src/tiers.ts — confirm the pricing FAQ wording aligns with how you want to position Lite publicly.
• Verify "Charlie" is the user-facing name for the AI assistant. This was inferred from recent commits introducing the Charlie branding.
• Spot-check new CLI command docs against char --help output. Docs were written from Rust source (apps/cli/src/cli.rs and command modules), not from running the binary. Flag names and defaults may have minor discrepancies.

Notes

• No code changes — documentation only.
• Formatted with dprint fmt after edits.
• The CLI docs file (cli/index.mdx) is noted as auto-generated from Rust source in tests; a future cargo test run may overwrite manual edits here. Consider regenerating instead if the test is part of CI.

Link to Devin session: https://app.devin.ai/sessions/8e5511aef1a445bda16a489f0e124015

[devin-ai-integration]

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