Quick Bug Fix

Lightweight TDD-driven bug fix workflow with planning mode. Analyze the bug, present a fix plan for approval, then reproduce with a failing test, fix, and verify. No orchestrator state, no task directory, no subagents.

For complex bugs that grow beyond a quick fix, suggests escalating to the full development workflow (/maister-development).

Usage

/maister-quick-bugfix "Login form submits twice on slow connections"
/maister-quick-bugfix "API returns 500 when email contains special characters"
/maister-quick-bugfix "Dark mode toggle doesn't persist after refresh"

When to Use

Use /maister-quick-bugfix when:

• Bug is reasonably scoped and reproducible
• You have a clear description of expected vs actual behavior
• Fix likely touches a small number of files

Use /maister-development instead when:

• Bug requires architectural changes
• Multiple subsystems are involved
• You need formal specification and planning

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Workflow

Step 1: Parse Input

Get the bug description:

• If provided as argument, use it directly
• If not provided, scan the recent conversation for bug context (error messages, reproduction steps, discussed symptoms). If found, use that as the bug description.
• Only if no argument AND no bug context in session, use ask_user:

  "Describe the bug — what's the expected behavior vs actual behavior?"
  

Step 2: Discover Standards

CRITICAL: This step MUST complete before entering plan mode.

Check if .maister/docs/INDEX.md exists:

If exists:

1. Read INDEX.md to discover available documentation and standards
2. Identify which standards are relevant based on:
   • The categories and files listed in INDEX.md
   • The area of the bug (e.g., API, frontend, database)
   • Keywords in the bug description
3. READ the applicable standard files (see Standards Reading Enforcement below)

If not exists:

• Note that no standards are available
• Suggest running /maister-init in completion message

Standards Reading Enforcement (MANDATORY)

BLOCKING: Reading INDEX.md alone is NOT sufficient. You MUST read actual standard files.

Enforcement Process:

1. Read INDEX.md to discover available standards
2. Identify which standards apply based on the bug area
3. READ each applicable standard file using Read tool (not just note it exists)
4. Apply standards during fix implementation
5. List applied standards in completion summary

Examples of standard discovery:

• Bug in API handler → Read API and error-handling standards
• Bug in form validation → Read validation and frontend standards
• Bug in database query → Read database and backend standards

Step 3: Analyze & Assess Complexity

Explore the codebase to understand the bug:

1. Search for relevant files (Glob, Grep, Read)
2. Trace the code path where the bug occurs
3. Identify: likely root cause, affected files, existing tests
4. Form a root cause hypothesis

Complexity Escalation Check:

Assess whether this bug exceeds quick-fix scope. If 2 or more of these signals are detected, suggest escalation:

Signal	Example
Changes span 5+ files across multiple modules	Bug in shared utility affects API, frontend, and background jobs
Requires database schema or data model changes	Missing column, wrong relationship, migration needed
Multiple valid fix approaches with architectural trade-offs	Could fix at API layer, middleware layer, or client layer
Security-sensitive code	Auth, crypto, permissions, input sanitization
Root cause unclear after initial analysis	Symptoms don't point to a single location

If escalation triggered:

Use ask_user:

• Question: "This bug appears more complex than a quick fix — [describe why]. How would you like to proceed?"
• Options:
  1. "Continue with quick fix" — proceed, accepting the complexity
  2. "Switch to full development workflow" — stop here and suggest running /maister-development with the bug description and analysis context

If no escalation needed or user chooses to continue: proceed to Step 4.

Step 4: Enter Planning Mode

Use the EnterPlanMode tool to present the fix plan for user approval.

Standards context from Step 2 and analysis from Step 3 MUST inform the plan.

Plan file content:

## Bug Analysis

**Root Cause**: [hypothesis with evidence — file paths, code references]
**Affected Files**: [list of files that need changes]

## Proposed Fix

[Description of the fix approach — what changes, why this approach]

## Test Strategy

[What the failing test will assert — setup conditions, expected behavior]

## Applicable Standards

[List each standard file read, with key guidelines extracted from each.
If no standards exist: "No AI SDLC standards found. Consider running `/maister-init`."]

## Standards Compliance Checklist

- [ ] [Guideline from standard file] (from `standards/[path]`)
- [ ] [Guideline from standard file] (from `standards/[path]`)

ExitPlanMode Gate: Mandatory Sections

BLOCKING: Do NOT call ExitPlanMode until the plan file contains:

1. "## Bug Analysis" — root cause hypothesis with evidence
2. "## Proposed Fix" — what changes and why
3. "## Test Strategy" — what the TDD red test will assert
4. "## Applicable Standards" — standards read and key guidelines
5. "## Standards Compliance Checklist" — checkboxes for applicable guidelines

If any section is missing, add it before calling ExitPlanMode.

Step 5: TDD Red Gate

Write a failing test that reproduces the bug.

1. Identify the appropriate test file (existing test suite or create new test file following project conventions)
2. Write a test that:
   • Sets up the conditions that trigger the bug
   • Asserts the correct (expected) behavior
   • Should FAIL with current code (proving the bug exists)
3. Run the test

The test MUST fail. This proves the bug is real and reproducible.

If the test passes:

• The bug may not be what we think, or it's already fixed
• Investigate further — re-read the bug description, check if conditions are correct
• Use ask_user: "The reproduction test passes — the expected behavior already works under these conditions. Is the bug description accurate, or are there additional conditions?"

Step 6: Fix & Verify (TDD Green)

Implement the fix:

1. Apply the fix based on the approved plan from Step 4
2. Apply discovered standards from Step 2
3. Run the failing test — it MUST now pass
4. Run the full test file and related test files to check for regressions

If tests fail after fix:

• Analyze the failure
• Adjust the fix
• Re-run tests
• Maximum 3 fix-and-verify iterations

If still failing after 3 attempts:

• Stop and present findings to the user
• Suggest escalating to /maister-development for a more thorough approach

Step 7: Summary

Provide completion summary:

• Root cause: What caused the bug
• Fix: What was changed and why
• Files modified: List of changed files
• Standards applied: Which standards from INDEX.md were followed
• Tests: Which tests were run and their results (including the TDD red→green transition)
• Commit suggestion: Propose a commit message

Post-implementation: verify standards compliance using the checklist from the plan file.

---

What This Does

1. Parses bug description from user input
2. Discovers applicable standards from .maister/docs/INDEX.md
3. Analyzes codebase to find root cause and assess complexity
4. Escalates to full development workflow if bug is too complex
5. Plans the fix and presents for user approval via planning mode
6. Reproduces bug with a failing test (TDD Red)
7. Fixes the bug and verifies test passes (TDD Green)
8. Summarizes root cause, fix, standards applied, and test results

Graceful Fallback

If .maister/docs/ does not exist:

Proceed with the bug fix normally, then note:

"No AI SDLC standards found. Consider running `/maister-init` to initialize
project documentation and coding standards for better consistency."