fix(codex): correct multi-agent guidance against Codex source

Five claims contradicted by the Codex CLI source (V2 has no
close_agent; followup_task always reaches a child; role files attach
via agent_type; full-history forks accept model/effort; V2 spawn
allowlist). Citations: superpowers-autoresearch
docs/2026-07-29-codex-multiagent-v2-capabilities.md.

skills/subagent-driven-development/SKILL.md

@@ -142,24 +142,17 @@ a ledger file, not only in todos.
 Read the plan once, note its context and Global Constraints, and create a
 todo per task.
 
-Before dispatching Task 1, scan the plan once for conflicts, writing down
+Before dispatching Task 1, scan the plan once for conflicts:
-what you checked as you check it:
 
 - tasks that contradict each other or the plan's Global Constraints
 - anything the plan explicitly mandates that the review rubric treats as a
   defect (a test that asserts nothing, verbatim duplication of a logic block)
 
-The scan's output is a table, not a verdict. One row for every pair of tasks
+Present everything you find to your human partner as one batched question —
-that share a file or an interface: the two tasks, what one produces against
+each finding beside the plan text that mandates it, asking which governs —
-what the other consumes, and what you found. One row for every task: whether
+before execution begins, not one interrupt per discovery mid-plan. If the
-its own text agrees with itself — the tests it specifies against the code it
+scan is clean, proceed without comment. The review loop remains the net for
-specifies, the files it creates against the files it later touches. "The scan
+conflicts that only emerge from implementation.
-is clean" without those rows is not a scan you ran.
-
-Write the table to the ledger. Rule on each conflict it surfaces — the spec
-is the binding authority, the plan is its argument — record the ruling beside
-its row, and dispatch Task 1. The review loop remains the net for conflicts
-that only emerge from implementation.
 
 ## Model Selection
 

skills/using-superpowers/references/codex-tools.md

@@ -7,7 +7,34 @@ Add to your Codex config (`~/.codex/config.toml`):
 multi_agent = true
 ```
 
-This enables `spawn_agent`, `wait_agent`, and `close_agent` for skills like `dispatching-parallel-agents` and `subagent-driven-development`. When using subagent-driven-development, close reviewer subagents when their review returns. Keep each implementer subagent open until its task's review passes — the fix loop resumes the implementer — then close it. If your harness cannot send another message to a spawned agent, dispatch each fix round as a fresh implementer carrying the brief, the report file, and the findings.
+This enables the multi-agent tools that skills like
+`dispatching-parallel-agents` and `subagent-driven-development` use.
+Which tools you get depends on the multi-agent version your model
+preset selects (current presets run V2; older ones run V1). Trust your
+actual tool list over any table — including this one — when they
+disagree.
+
+- **Spawning:** give children a clean context with
+  `spawn_agent {fork_turns: "none"}`; the default `"all"` copies your
+  entire transcript into the child. On Codex 0.145+, role files under
+  `~/.codex/agents/` attach to isolated forks via `agent_type`.
+  Full-history forks accept `model` and `reasoning_effort` overrides
+  (only `agent_type` is refused there) — isolated forks are the SDD
+  default for context hygiene, not because overrides require them.
+- **Fix rounds:** resume the implementer with `followup_task` — it
+  delivers your message, triggers a turn, and transparently reloads a
+  child the harness evicted. Never dispatch a fresh implementer on the
+  theory that a spawned agent cannot be messaged again; on V2 it
+  always can.
+- **Lifecycle:** V2 has no `close_agent`. Finished children are
+  evicted automatically when slots are needed; leaving them unclosed
+  costs nothing. Only V1 sessions have `close_agent` — there, close
+  reviewers when their review returns, and close each implementer
+  after its task's review passes.
+- **Model names:** never copy a model name from a skill, table, or old
+  session into `spawn_agent` without checking it against your current
+  spawn allowlist — V2 accepts only V2-capable presets and hard-errors
+  on the rest.
 
 ## Environment Detection