get-shit-done-for-antigravity: Skill for Claude Code

Context Compressor Skill

Core principle: Compress aggressively, decompress only when needed.

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Compression Strategies

Strategy 1: Summary Mode

When: You've fully understood a file and may need to reference it later.

How:

## File Summary: src/auth/login.ts

**Purpose:** Handles user login via email/password
**Key functions:**
- handleLogin(req, res) → Validates credentials, returns JWT
- validateCredentials(email, password) → Checks against DB
**Dependencies:** bcrypt, jose, database
**Tokens saved:** ~400 (95 lines not reloaded)

Use instead of: Re-reading the full file

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Strategy 2: Outline Mode

When: You need to understand a file's structure but not implementation details.

How:

## Outline: src/services/payment.ts (127 lines)

- L1-15: Imports and types
- L17-35: PaymentService class
  - L20: constructor(config)
  - L25: processPayment(amount, method)
  - L45: refund(transactionId)
  - L67: getHistory(userId)
- L90-127: Helper functions

Tokens: ~50 vs ~500 for full file

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Strategy 3: Diff-Only Mode

When: You've already seen a file and need to understand changes.

How:

## Changes to: src/config.ts

Added:
- L45: TOKEN_BUDGET_THRESHOLD = 0.5
- L46: COMPRESSION_ENABLED = true

Modified:
- L12: MAX_CONTEXT → increased from 100000 to 150000

Use for: Reviewing modifications, understanding updates

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Strategy 4: Reference Mode

When: You need to track a file without loading it.

How:

## References

| File | Last Seen | Summary | Load If |
|------|-----------|---------|---------|
| auth.ts | Task 2 | Login handling | Auth bugs |
| db.ts | Task 1 | Postgres client | DB errors |
| utils.ts | Never | Utility funcs | Helper needed |

Cost: ~10 tokens vs ~200+ per file

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Strategy 5: Progressive Disclosure