docs: add Manus AI install option to README files

[farizanjum]

Summary

Adds Manus AI as a documentation-only install option across OpenDirectory README files.

Changes

• Add Option D: Manus AI to the root README installation section.
• Update root README support copy to include Manus AI.
• Update the skill README install generator to produce Options A-D.
• Regenerate skill README install sections with skill-specific Manus AI import links.
• Remove duplicate generic install sections and keep skill-specific setup docs under setup-oriented headings.

Notes

Manus AI is not added as a CLI target because it imports skills through a Manus URL flow rather than --target.

Validation

• Verified every skill README has exactly one managed install block.
• Verified every skill README includes Options A-D.
• Verified every skill README has one install-like heading only.
• Verified Manus AI links point to each skill own GitHub folder.
• Ran the skill README generator repeatedly to confirm idempotency.
• Ran python -m py_compile scripts/update_skill_readmes.py.
• Ran pnpm build:plugin.
• Ran pnpm run test:e2e from packages/cli.
• Ran pnpm exec vitest run scripts/build-claude-plugin.test.ts packages/cli/src/fs-adapters.test.ts.

Root pnpm test still fails because packages/cli/src/e2e.test.ts invokes pnpm run build from the repo root, but the root package has no build script. The CLI e2e suite passes when run through the CLI package script.

[greptile-apps]

Greptile Summary

This PR adds Manus AI as a fourth installation option (Option D) across all 60 skill READMEs and the root README, backed by a substantially refactored update_skill_readmes.py script that now manages the install block idempotently via HTML comment markers.

• Root README: typing-SVG tagline and agents badge updated to reflect Manus AI (7 → 8 agents); Option D section added with a blog-cover-image-cli demo link; meta-ads-skill table cell corrected from an accidental install-command to its description.
• Script refactor: replaces the old one-shot injector with a full lifecycle manager — removes existing managed blocks, strips legacy generic-install sections, normalises leftover "Install" headings to "Setup", then injects a fresh START/END-marker-wrapped block with skill-specific Manus import URLs generated via urllib.parse.quote.
• 60 skill READMEs: each regenerated with Options A–D; Manus links are per-skill and point to the correct GitHub folder; old duplicate install sections removed.

Confidence Score: 5/5

Documentation-only changes with a well-structured script refactor; safe to merge.

All changes are README content and a documentation-generation script. No runtime logic, APIs, or data paths are modified. The script refactor correctly handles idempotency, marker removal, and per-skill URL generation. The one open question — whether the hardcoded opendirectory-gtm-skills plugin name covers the full collection — is a documentation clarity concern that does not block merging.

scripts/update_skill_readmes.py — worth confirming the Option C plugin name covers all 60 skills, not just the GTM Intelligence subset.

Important Files Changed

Filename	Overview
scripts/update_skill_readmes.py	Major refactor: replaces a simple one-shot injector with a robust idempotent manager (START/END HTML comment markers, generic-install removal, heading normalisation, Manus URL builder). Logic is sound; one clarification needed on the hardcoded GTM plugin name in Option C.
README.md	Adds Option D (Manus AI) to the root install section, updates the animated SVG tagline and agents badge count from 7 to 8, and fixes the meta-ads-skill table row from an accidental install-command cell to the correct description.
skills/blog-cover-image-cli/README.md	Representative skill README: managed install block injected with correct skill-specific Manus URL; old generic Install section removed; existing Installation heading normalised to Setup.
skills/meta-ads-skill/README.md	Managed install block with Options A-D injected; skill-specific Manus URL generated correctly for meta-ads-skill.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[update_readmes called] --> B[For each skill directory]
    B --> C{README.md exists?}
    C -- No --> D[SKIP - print message]
    C -- Yes --> E[Read file content]
    E --> F[inject_install_section]
    F --> G[remove_managed_install_section]
    G --> G1{START+END markers found?}
    G1 -- Yes --> G2[Regex-remove managed block]
    G1 -- No, START only --> G3[Truncate to next non-install heading]
    G2 --> H[remove_generic_install_sections]
    G3 --> H
    H --> I[normalize_remaining_installation_headings]
    I --> J[find_install_insert_index]
    J --> K[build_install_block with skill_name]
    K --> K1["Option A: npx CLI (skill-specific)"]
    K --> K2[Option B: Claude Desktop App]
    K --> K3["Option C: Claude Code Native (hardcoded opendirectory-gtm-skills)"]
    K --> K4["Option D: Manus AI (skill-specific URL via manus_import_url)"]
    K --> L[Inject block at insert index]
    L --> M{Content changed?}
    M -- No --> N[UNCHANGED]
    M -- Yes --> O[Write file]
    O --> P[UPDATED]

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