docs: streamline README with collapsible sections

[Miyamura80]

Summary

• Reorganize README with collapsible <details> sections for better scanability
• Simplify workflow descriptions and add TLDRs to major sections
• Update agent quickstart to mention Cursor/Codex alongside Claude Code

Test plan

• Verify README renders correctly on GitHub

🤖 Generated with Claude Code

---

[greptile-apps]

Greptile Summary

This PR reorganizes README.md by wrapping verbose sections in collapsible <details> blocks, adding TLDR lines to major sections, and updating the Agent Quickstart to mention Cursor/Codex alongside Claude Code. The changes are purely documentation-focused and improve scannability.

Issues found:

• Broken anchor link (line 25): [task definitions]((#task-definition)) has double parentheses, producing an invalid URL — the link will not be clickable on GitHub.
• Typo (line 14): "agrent" in the <details> summary label should be "agent".
• Typo (line 241): "dashboad" in the Live Monitoring TLDR should be "dashboard".

Confidence Score: 4/5

• Safe to merge after fixing the broken anchor link on line 25 and the two typos.
• One P1 issue — the double-parenthesis anchor link ((#task-definition)) will silently fail to render as a hyperlink on GitHub, breaking navigation from the Features bullet to the Task Definition section. Two minor P2 typos are also present. All issues are confined to documentation and carry no runtime risk, but the broken link is a user-visible defect in the rendered README.
• README.md — lines 14, 25, and 241 need fixes before merging.

Important Files Changed

Filename	Overview
README.md	README restructured with collapsible <details> sections and TLDRs; contains one broken anchor link (double parentheses) and two typos ("agrent", "dashboad").

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[Define task_name.json] --> B[desktest run --monitor]
    B --> C{Happy with agent\ncomputer-use?}
    C -->|✅ Yes| D[desktest codify trajectory.jsonl]
    D --> E[Deterministic Python script]
    E --> F[desktest run --replay\nCI/CD pipeline]
    C -->|❌ No| G[desktest logs desktest_artifacts/]
    G --> H[Debug with coding agent\nClaude Code / Cursor / Codex]
    H --> B

    subgraph QA Mode
        Q1[desktest run --monitor --qa] --> Q2{Bug found?}
        Q2 -->|Yes| Q3[BUG-00N.md written]
        Q3 --> Q4[Slack notification\noptional]
        Q2 -->|No| Q5[Task continues]
    end

Loading

_{Reviews (1): Last reviewed commit: "fix: typos and broken anchor in README" | Re-trigger Greptile}