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rex(103): Complete native fixer validation
Session 103 Results: - Tested 15 native fixers across 5 languages - 11 working, 4 not installed TESTED WORKING: - Python: autoflake, black, isort, pyupgrade, ruff ✅ - Go: gofmt, goimports ✅ - Java: google-java-format ✅ - C/C++: clang-format ✅ - TypeScript: eslint ✅ NOT INSTALLED (documented): - sorald (Java SonarQube) - clang-tidy (C/C++) - dotnet-format (C#) - OpenRewrite (Java Maven plugin) Added: - docs/TIER2_FIXER_MATRIX.md - Comprehensive capability matrix - getInstallInstructions() - Installation hints for tools - checkTier2ToolAvailability() - Tool availability checks - getAllTier2ToolsStatus() - Batch availability check - tier2-executor.test.ts - Test suite for executors Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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‎.claude/commands/db-describe.md‎

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# Describe Database Table
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Show the structure and schema of a specific table.
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## Usage
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```
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/db-describe users
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/db-describe analysis_results
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/db-describe auth.users
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```
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## Instructions
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When this skill is invoked:
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1. **Parse the table name**:
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- If includes dot (e.g., `auth.users`): split into schema.table
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- If no dot: assume `public` schema
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2. **Execute schema query** using postgres MCP tool:
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```sql
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SELECT
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column_name,
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data_type,
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is_nullable,
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column_default,
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character_maximum_length
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FROM information_schema.columns
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WHERE table_schema = 'SCHEMA' AND table_name = 'TABLE'
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ORDER BY ordinal_position;
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```
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3. **Also fetch constraints**:
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```sql
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SELECT
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tc.constraint_name,
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tc.constraint_type,
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kcu.column_name
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FROM information_schema.table_constraints tc
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JOIN information_schema.key_column_usage kcu
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ON tc.constraint_name = kcu.constraint_name
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WHERE tc.table_schema = 'SCHEMA' AND tc.table_name = 'TABLE';
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```
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4. **Format output** showing:
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- Column details in a table
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- Primary keys, foreign keys, unique constraints
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- Indexes if available
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## Arguments
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$ARGUMENTS - Table name (required), optionally prefixed with schema (e.g., auth.users)

‎.claude/commands/db-stats.md‎

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# Database Statistics
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Show statistics and row counts for database tables.
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## Usage
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```
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/db-stats
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/db-stats analysis_results
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```
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## Instructions
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When this skill is invoked:
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1. **If no table specified**, show overview stats:
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```sql
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SELECT
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schemaname as schema,
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relname as table_name,
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n_tup_ins as inserts,
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n_tup_upd as updates,
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n_tup_del as deletes,
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n_live_tup as live_rows,
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n_dead_tup as dead_rows,
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last_vacuum,
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last_autovacuum
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FROM pg_stat_user_tables
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ORDER BY n_live_tup DESC
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LIMIT 20;
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```
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2. **If table specified**, show detailed stats:
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```sql
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-- Row count
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SELECT COUNT(*) as total_rows FROM table_name;
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-- Recent activity (if timestamp column exists)
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SELECT
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DATE(created_at) as date,
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COUNT(*) as count
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FROM table_name
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WHERE created_at > NOW() - INTERVAL '7 days'
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GROUP BY DATE(created_at)
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ORDER BY date DESC;
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```
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3. **Format output** as summary statistics
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## Arguments
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$ARGUMENTS - Optional table name for detailed stats

‎.claude/commands/db-tables.md‎

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# List Database Tables
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Quickly list all tables in the Supabase database.
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## Usage
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```
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/db-tables
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/db-tables public
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/db-tables auth
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```
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## Instructions
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When this skill is invoked:
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1. **Determine the schema** to query:
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- If no argument: show tables from `public` schema
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- If argument provided: show tables from that schema
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2. **Execute the query** using postgres MCP tool:
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```sql
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SELECT table_name,
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(SELECT COUNT(*) FROM information_schema.columns c WHERE c.table_name = t.table_name) as column_count
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FROM information_schema.tables t
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WHERE table_schema = 'SCHEMA_NAME'
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ORDER BY table_name;
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```
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3. **Format output** as a clean table showing:
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- Table name
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- Number of columns
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- Brief description if available from comments
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## Arguments
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$ARGUMENTS - Optional schema name (default: public)

‎.claude/commands/db.md‎

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# Query Supabase Database
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Run SQL queries against the CodeQual Supabase PostgreSQL database.
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## Usage
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```
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/db SELECT * FROM users LIMIT 5
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/db DESCRIBE auth.users
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/db What tables exist in the public schema?
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```
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## Instructions
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When this skill is invoked:
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1. **Parse the user's request** - It can be:
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- Raw SQL: Execute directly via the postgres MCP tool
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- Natural language: Convert to appropriate SQL first
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2. **Use the postgres MCP tool** to execute the query:
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```
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mcp__postgres__query with sql parameter
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```
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3. **Format the results** in a readable table format
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4. **For schema exploration**, use these queries:
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- List tables: `SELECT table_name FROM information_schema.tables WHERE table_schema = 'public' ORDER BY table_name`
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- Describe table: `SELECT column_name, data_type, is_nullable FROM information_schema.columns WHERE table_name = 'TABLE_NAME'`
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- List schemas: `SELECT schema_name FROM information_schema.schemata`
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## Common Queries
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### List all tables
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```sql
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SELECT table_schema, table_name
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FROM information_schema.tables
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WHERE table_schema NOT IN ('pg_catalog', 'information_schema')
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ORDER BY table_schema, table_name;
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```
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### Check table structure
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```sql
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SELECT column_name, data_type, is_nullable, column_default
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FROM information_schema.columns
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WHERE table_name = 'your_table'
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ORDER BY ordinal_position;
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```
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### Count rows in table
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```sql
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SELECT COUNT(*) FROM table_name;
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```
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## Safety
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- The postgres MCP server is configured for **read-only access**
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- No INSERT, UPDATE, DELETE, or DDL operations are allowed
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- Queries are executed against the Supabase pooler connection
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## Arguments
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$ARGUMENTS - The SQL query or natural language description of what to query

‎docs/TIER2_FIXER_MATRIX.md‎

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# Tier 2 Native Fixer Capability Matrix
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> Session 103: Complete validation of all native fixers for the fix-agent pipeline.
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## Overview
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The fix-agent uses a 3-tier approach:
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- **Tier 1**: Pattern cache (0 API calls)
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- **Tier 2**: Native --fix tools (0 API calls) ← This document
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- **Tier 3**: AI-based fixing (uses API calls)
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## Fixer Matrix
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### Python Tools
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| Tool | Command | What It Fixes | Limitations | Status |
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|------|---------|---------------|-------------|--------|
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| **Ruff** | `ruff check --fix` | F632 (is vs ==), F401 (unused imports), formatting | Some rules need `--unsafe-fixes` | ✅ Tested |
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| **Autoflake** | `autoflake --in-place --remove-all-unused-imports --remove-unused-variables` | Unused imports, unused variables | Preserves imports with comments | ✅ Tested |
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| **Black** | `black` | All formatting (quotes, spacing, line length) | Opinionated, no config | ✅ Tested |
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| **isort** | `isort` | Import organization (stdlib→third-party→local) | None | ✅ Tested |
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| **PyUpgrade** | `pyupgrade --py310-plus` | Old syntax (.format→f-string, List→list) | Python version specific | ✅ Tested |
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### Go Tools
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| Tool | Command | What It Fixes | Limitations | Status |
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|------|---------|---------------|-------------|--------|
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| **gofmt** | `gofmt -w` | All formatting | Does NOT remove unused imports | ✅ Tested |
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| **goimports** | `goimports -w` | Formatting + unused imports | Need to install separately | ✅ Tested |
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| **golangci-lint** | `golangci-lint run --fix` | Limited (formatting only) | Most linters don't support --fix | ✅ Tested |
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### Java Tools
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| Tool | Command | What It Fixes | Limitations | Status |
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|------|---------|---------------|-------------|--------|
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| **google-java-format** | `google-java-format --replace` | All formatting (Google style) | Formatting only, NOT semantic | ✅ Tested |
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| **Sorald** | `sorald repair` | ~25 SonarQube rules | Specialized, needs installation | ❌ Not Installed |
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| **OpenRewrite** | Maven/Gradle plugin | Recipe-based refactoring | Requires project setup | ⚙️ Plugin |
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| **PMD** | N/A | **NO AUTO-FIX** | Detection only | ⚠️ Needs AI |
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### C/C++ Tools
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| Tool | Command | What It Fixes | Limitations | Status |
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|------|---------|---------------|-------------|--------|
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| **clang-format** | `clang-format -i` | All formatting | Formatting only | ✅ Tested |
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| **clang-tidy** | `clang-tidy --fix` | Modernization, readability | Needs compilation DB | ❌ Not Installed |
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### C# Tools
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| Tool | Command | What It Fixes | Limitations | Status |
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|------|---------|---------------|-------------|--------|
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| **dotnet-format** | `dotnet format` | Formatting, analyzers | Needs .NET SDK | ❌ Not Installed |
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### TypeScript/JavaScript Tools
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| Tool | Command | What It Fixes | Limitations | Status |
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|------|---------|---------------|-------------|--------|
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| **ESLint** | `eslint --fix` | Formatting rules, simple fixes | Semantic rules need AI | ✅ Tested |
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| **Prettier** | `prettier --write` | All formatting | Formatting only | Not in tier2-executor |
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## Installation Instructions
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### Python Tools
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```bash
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# Via pipx (recommended)
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pipx install autoflake
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pipx install pyupgrade
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# Via pip
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pip install black isort ruff
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```
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### Go Tools
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```bash
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# goimports
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go install golang.org/x/tools/cmd/goimports@latest
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# Ensure GOPATH/bin is in PATH
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export PATH=$PATH:$(go env GOPATH)/bin
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```
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### Java Tools
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```bash
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# google-java-format
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brew install google-java-format
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# Sorald (optional)
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brew install sorald
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# Or download JAR from: https://github.com/SpoonLabs/sorald
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```
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### C/C++ Tools
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```bash
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# clang-format (usually pre-installed on macOS)
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brew install clang-format
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# clang-tidy (part of LLVM)
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brew install llvm
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export PATH="/opt/homebrew/opt/llvm/bin:$PATH"
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```
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### C# Tools
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```bash
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# .NET SDK
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brew install dotnet
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```
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## Rules That REQUIRE AI (Tier 3)
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These rules cannot be fixed by native tools and require AI:
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### Java (PMD)
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- `UselessParentheses` - Semantic analysis needed
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- `AvoidDollarSigns` - Variable renaming
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- `UnnecessaryAnnotationValueElement` - Context-aware
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- `UseUtilityClass` - Class restructuring
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- All PMD rules (PMD has no --fix)
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### TypeScript (ESLint)
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- `@typescript-eslint/no-explicit-any` - Type inference needed
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- `@typescript-eslint/no-unsafe-*` - Semantic analysis
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### Go
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- `errcheck` - Error handling patterns
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- `unused` - Code removal decisions
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### Python
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- Complex refactoring rules
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- Security-related fixes
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## Recommended Fix Pipeline
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```
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Issue Detected
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│
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▼
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┌─────────────────┐
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│ Tier 1: Cache │ → Pattern exists? → Apply template (0 API calls)
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└────────┬────────┘
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│ No pattern
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▼
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┌─────────────────┐
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│ Tier 2: Native │ → Tool supports --fix? → Run native tool
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└────────┬────────┘
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│ No native fix
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▼
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┌─────────────────┐
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│ Tier 3: AI │ → Generate fix with AI model
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└─────────────────┘
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```
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## Usage in fix-agent
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```typescript
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import {
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createTier2Executor,
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getRecommendedTier2Fixer
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} from './tool-fixers/tier2-executor';
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// Get recommended native fixer
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const fixer = getRecommendedTier2Fixer('python', 'ruff');
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// Returns: 'ruff'
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// Create executor
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const executor = createTier2Executor('ruff');
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if (executor) {
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const result = await executor.executeFix({
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files: ['path/to/file.py'],
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workingDir: '/project',
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});
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}
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```
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## Session 103 Test Results Summary
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| Category | Tools Tested | Working | Not Installed |
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|----------|--------------|---------|---------------|
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| Python | 5 | 5 ✅ | 0 |
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| Go | 3 | 3 ✅ | 0 |
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| Java | 4 | 2 ✅ | 2 |
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| C/C++ | 2 | 1 ✅ | 1 |
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| C# | 1 | 0 | 1 |
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| **Total** | **15** | **11 ✅** | **4** |
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---
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*Last updated: Session 103 (2026-01-19)*

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