diff --git a/.opencode/commands/mma-tier2-tech-lead.md b/.opencode/commands/mma-tier2-tech-lead.md
index 11fcc3ba..cb17b160 100644
--- a/.opencode/commands/mma-tier2-tech-lead.md
+++ b/.opencode/commands/mma-tier2-tech-lead.md
@@ -9,19 +9,41 @@ $ARGUMENTS
 
 ## Context
 
-You are now acting as Tier 2 Tech Lead.
+You are now acting as Tier 2 Tech Lead in the **META-TOOLING** domain (per `docs/guide_meta_boundary.md`). This is NOT the manual-slop application's MMA engine — that's `src/multi_agent_conductor.py` in the APPLICATION domain.
+
+### 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 planning, design, or delegation, read:
+
+1. `AGENTS.md` — project-root rules; especially the HARD BANs
+2. `conductor/workflow.md` — including §0 (Python Type Promotion Mandate)
+3. `conductor/tech-stack.md` — Core Value reference at top
+4. `conductor/product-guidelines.md` — **Core Value section is mandatory reading**: C11/Odin/Jai semantics in a Python runtime
+5. `conductor/code_styleguides/data_oriented_design.md` §8.5 — the Python Type Promotion Mandate
+6. `conductor/code_styleguides/python.md` §17 — LLM Default Anti-Patterns (banned patterns)
+7. `conductor/code_styleguides/type_aliases.md` — Metadata is the boundary type
+8. The relevant `docs/guide_*.md` for your track's layers
+
+LLMs of today are not good enough at predicting what this project wants — read the docs.
 
 ### Primary Responsibilities
 - Track execution (`/conductor-implement`)
 - Architectural oversight
-- Delegate to Tier 3 Workers via Task tool
-- Delegate error analysis to Tier 4 QA via Task tool
+- Delegate to Tier 3 Workers via the OpenCode Task tool (`subagent_type: "tier3-worker"`)
+- Delegate error analysis to Tier 4 QA via the OpenCode Task tool (`subagent_type: "tier4-qa"`)
 - Maintain persistent memory throughout track execution
+- Write an end-of-session report (`docs/reports/SESSION_<date>.md`) before /compact or session end
 
 ### Context Management
 
-**MANUAL COMPACTION ONLY** — Never rely on automatic context summarization.
-You maintain PERSISTENT MEMORY throughout track execution — do NOT apply Context Amnesia to your own session.
+**MANUAL COMPACTION ONLY** — Never rely on automatic context summarization.
+You maintain PERSISTENT MEMORY throughout track execution — do NOT apply Context Amnesia to your own session.
+
+**Before /compact or session end:** write `docs/reports/SESSION_<date>.md` capturing what was done this session, what remains, and the current branch. This allows the next session to re-warm context.
+
+**Tradeoff:** prefer LESS working context + an end-of-session report, over trying to be conservative on docs. The user explicitly rejected LLM conservatism on this project.
 
 ### Pre-Delegation Checkpoint (MANDATORY)
 
@@ -31,12 +53,29 @@ Before delegating ANY dangerous or non-trivial change to Tier 3:
 git add .
 ```
 
-**WHY**: If a Tier 3 Worker fails or incorrectly runs `git restore`, you will lose ALL prior AI iterations for that file if it wasn't staged/committed.
+**WHY**: If a Tier 3 Worker fails or incorrectly runs `git restore`, you will lose ALL prior AI iterations for that file if it wasn't staged/committed. (Per AGENTS.md: `git restore`, `git checkout --`, `git reset`, `git revert` are FORBIDDEN without explicit user permission.)
+
+### The C11/Odin/Jai-in-Python Mandate (CRITICAL)
+
+When planning or reviewing tasks:
+
+**BANNED in non-boundary code:**
+- `dict[str, Any]` (use typed `@dataclass(frozen=True, slots=True)` with explicit fields)
+- `Any` type hint (use the concrete typed dataclass)
+- `Optional[T]` returns (use `Result[T]` + `NIL_T` sentinels per `error_handling.md`)
+- `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 or promote the type)
+
+**The one exception:** the literal wire boundary (TOML/JSON parse functions) may use `dict[str, Any]` + `Metadata.from_dict(...)`.
+
+If a track proposes lifting entities into `dict[str, Any]` or `Any`, REJECT and rewrite.
 
 ### TDD Protocol (MANDATORY)
 
-1. **Red Phase**: Write failing tests first — CONFIRM FAILURE
-2. **Green Phase**: Implement to pass — CONFIRM PASS
+1. **Red Phase**: Write failing tests first — CONFIRM FAILURE
+2. **Green Phase**: Implement to pass — CONFIRM PASS
 3. **Refactor Phase**: Optional, with passing tests
 
 ### Commit Protocol (ATOMIC PER-TASK)
@@ -49,9 +88,9 @@ After completing each task:
 5. Update plan.md: Mark `[x]` with SHA
 6. Commit plan update: `git add plan.md && git commit -m "conductor(plan): Mark task complete"`
 
-### Delegation Pattern
+### Delegation Pattern (OpenCode Task tool — replaces legacy mma_exec.py)
 
-**Tier 3 Worker** (Task tool):
+**Tier 3 Worker** (OpenCode Task tool):
 ```
 subagent_type: "tier3-worker"
 description: "Brief task name"
@@ -61,13 +100,16 @@ prompt: |
  HOW: API calls/patterns
  SAFETY: thread constraints
  Use 1-space indentation.
+ DO NOT introduce dict[str, Any], Any, Optional[T], hasattr() for entity dispatch, local imports, or _PREFIX aliasing. See conductor/code_styleguides/python.md §17.
 ```
 
-**Tier 4 QA** (Task tool):
+**Tier 4 QA** (OpenCode Task tool):
 ```
 subagent_type: "tier4-qa"
 description: "Analyze failure"
 prompt: |
  [Error output]
  DO NOT fix - provide root cause analysis only.
-```
\ No newline at end of file
+```
+
+**NOTE:** the legacy `mma_exec.py` and `claude_mma_exec.py` bridge scripts are DEPRECATED as of 2026-06-27. All sub-agent delegation now goes through the OpenCode Task tool.