feat: make pretty print the default option for pgsql-deparser

[pyramation]

feat: make pretty print the default option for pgsql-deparser

Summary

This PR changes the default value of the pretty option from false to true, making pretty-formatted SQL output the default behavior for pgsql-deparser. The change maintains full backward compatibility - users can still explicitly set pretty: false to get compact output.

Key Changes:

• Updated default parameters in 3 core locations: SqlFormatter constructor, DeparserContext constructor, and interface documentation
• Updated README documentation to reflect new default values
• Fixed 7 failing tests in entry-point.test.ts by explicitly setting pretty: false to maintain their expected compact output
• All 284 test suites continue to pass (654 tests total)

Review & Testing Checklist for Human

• Verify all default locations updated: Double-check that I didn't miss any other places where the pretty default is defined or used (search codebase for "pretty" and "false")
• Test with complex real-world SQL: Run the deparser on complex queries (joins, subqueries, CTEs) to ensure pretty formatting works correctly in all cases
• Check for other affected tests: Look for any other tests that might implicitly expect compact output but weren't caught in my test run
• Verify backward compatibility: Confirm that explicitly setting { pretty: false } still produces the exact same compact output as before

---

Diagram

%%{ init : { "theme" : "default" }}%%
graph TD
    subgraph Legend
        L1["Major Edit"]:::major-edit
        L2["Minor Edit"]:::minor-edit  
        L3["Context/No Edit"]:::context
    end
    
    A["src/deparser.ts<br/>(interface comment)"]:::major-edit
    B["src/utils/sql-formatter.ts<br/>(constructor default)"]:::major-edit
    C["src/visitors/base.ts<br/>(constructor default)"]:::major-edit
    D["README.md<br/>(documentation)"]:::minor-edit
    E["__tests__/entry-point.test.ts<br/>(test fixes)"]:::minor-edit
    F["User API<br/>(deparseSync function)"]:::context
    
    A --> F
    B --> F
    C --> F
    F --> D
    F --> E
    
    
    classDef major-edit fill:#90EE90
    classDef minor-edit fill:#87CEEB  
    classDef context fill:#FFFFFF

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Notes

• Breaking change consideration: While the API remains unchanged, this modifies default behavior which could affect users who rely on compact output by default
• Minimal change approach: Per user request, this implements the smallest possible change to achieve the goal - only updating the 3 core default parameter locations
• Test strategy: Fixed only the failing tests by adding explicit pretty: false rather than changing test expectations, maintaining test integrity

Session Details:

• Link to Devin run: https://app.devin.ai/sessions/64e38b8e856f4287b1eb66690c5ec2bb
• Requested by: Dan Lynch (@pyramation)

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