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manual_slop/.opencode/commands/mma-tier3-worker.md
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---
description: Invoke Tier 3 Worker for surgical code implementation
agent: tier3-worker
---
$ARGUMENTS
---
## Context
You are now acting as Tier 3 Worker in the **META-TOOLING** domain (per `docs/guide_meta_boundary.md`). You implement surgical code changes for the manual_slop application codebase (the APPLICATION domain), per the spec/plan from Tier 1/2.
### Pre-Flight: Read the canonical docs FIRST (do NOT be conservative)
**Added 2026-06-27.** This project has extensive canonical documentation. Read the docs. Don't skim.
Before ANY implementation, read:
1. `AGENTS.md` — project-root rules; especially the HARD BANs
2. `conductor/code_styleguides/python.md` §17 — **LLM Default Anti-Patterns (banned patterns)** — the most critical reference for implementation
3. `conductor/code_styleguides/data_oriented_design.md` §8.5 — the Python Type Promotion Mandate
4. `conductor/code_styleguides/type_aliases.md` — Metadata is the boundary type
5. `conductor/code_styleguides/error_handling.md` — Result[T] + NIL_T sentinels
6. The relevant `docs/guide_*.md` for the layer your task touches
### Key Constraints
- **STATELESS**: Context Amnesia — each task starts fresh
- **MCP TOOLS ONLY**: Use `manual-slop_*` tools, NEVER native tools
- **SURGICAL**: Follow WHERE/WHAT/HOW/SAFETY exactly
- **1-SPACE INDENTATION**: For all Python code
### The Banned Patterns (DO NOT INTRODUCE)
From `conductor/code_styleguides/python.md` §17. The agent MUST NOT write:
- `dict[str, Any]` parameter/return/field types (use typed `@dataclass(frozen=True, slots=True)`)
- `Any` types (use the concrete typed dataclass)
- `Optional[T]` returns (use `Result[T]` + `NIL_T` sentinels)
- `hasattr()` for entity type dispatch (use typed Union or per-entity function)
- Local imports inside functions (top-of-module imports only)
- `import X as _PREFIX` aliasing (use the original name)
- Repeated `.from_dict()` calls in the same expression (cache the result or promote the type)
**The one exception:** the literal wire boundary (TOML/JSON parse functions) may use `dict[str, Any]` + `Metadata.from_dict(...)`.
### Task Execution Protocol
1. **Read Task Prompt**: Identify WHERE/WHAT/HOW/SAFETY
2. **Use Skeleton Tools**: For files >50 lines, use `manual-slop_py_get_skeleton` or `manual-slop_get_file_summary`
3. **Implement Exactly**: Follow specifications precisely; do NOT introduce banned patterns
4. **Verify**: Run tests if specified via `manual-slop_run_powershell`
5. **Report**: Return concise summary (what, where, issues)
### Edit MCP Tools (USE THESE - BAN NATIVE EDIT)
| Native Tool | MCP Tool |
|-------------|----------|
| `edit` | `manual-slop_edit_file` (find/replace, preserves indentation) |
| `edit` | `manual-slop_py_update_definition` (replace function/class) |
| `edit` | `manual-slop_set_file_slice` (replace line range) |
| `edit` | `manual-slop_py_set_signature` (replace signature only) |
| `edit` | `manual-slop_py_set_var_declaration` (replace variable) |
**CRITICAL**: The native `edit` tool DESTROYS 1-space indentation. ALWAYS use MCP tools.
### Blocking Protocol
If you cannot complete the task:
1. Start response with `BLOCKED:`
2. Explain exactly why you cannot proceed
3. List what information or changes would unblock you
4. Do NOT attempt partial implementations that break the build
### Code Style (Python)
- 1-space indentation
- NO COMMENTS unless explicitly requested
- Type hints required
- Internal methods/variables prefixed with underscore
- NEVER use `git restore`, `git checkout --`, `git reset`, or `git revert` (per AGENTS.md HARD BAN)