feat: graduate wait-what into the productivity bucket

Moves the skill out of in-progress/ and ships it: bucket README,
top-level README, plugin.json, an ask-matt router entry, and a docs
page at docs/productivity/wait-what.md.

Productivity rather than engineering — it fires in any conversation
with an agent, code or not. The CONTEXT.md clause is an opportunistic
hook, not a prerequisite.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

.changeset/ask-matt-phase-boundaries.md

@@ -0,0 +1,13 @@
+---
+"mattpocock-skills": patch
+---
+
+Give `/ask-matt` the **phase boundary** decision tree, replacing the two-bullet `Crossing sessions` section.
+
+A **phase** is a chunk of work inside a session — the grilling, the implementation, the QA — and the boundary between two of them is where you decide what to do with the context you've built. The router now carries all five options in order (**continue**, `/clear`, `/handoff`, **subagent**, `/compact`), with the ordered tree and its reasoning disclosed in a new `PHASE-BOUNDARIES.md`. Three fixes come with it:
+
+- **`/handoff` was oversold.** It read as the general bridge between context windows. It's narrow: you need it only when something has to *travel* — a new harness, a new directory, a colleague, or a side task forked mid-phase. What it buys is portability.
+- **`/compact` is the default, not the first reach.** It sits at the bottom of the tree, after the four cheaper or more precise questions above it. Starting there produces a session that's confidently wrong about whatever the summary flattened.
+- **Two branches were missing entirely.** **Continue** is the one to rule out first — it's the only move that keeps the conversation as a primary source rather than a summary of one — and a **subagent** handles anything scoped tightly enough to run AFK.
+
+Context hygiene's escape hatch now says `/compact` rather than `/handoff` (same harness, same directory, at a boundary — the handoff clause doesn't apply), and the smart zone figure is updated from ~120k to ~150k tokens.

.changeset/wait-what.md

@@ -0,0 +1,9 @@
+---
+"mattpocock-skills": minor
+---
+
+Add **`wait-what`** — a fire extinguisher for model verbosity. Fire it the moment a message doesn't land, and the agent re-pitches it: a little context, ASD-STE100 Simplified Technical English, and the ubiquitous language from your `CONTEXT.md`. User-invoked, three lines long.
+
+The mechanism is the name. Concision skills fail by growing — a 400-line skill still leaves the model verbose — so this one is a single precise leading word and nothing else. Names that describe the *output* (`/tldr`, `/no-fluff`) make the model clip words and lose you further; naming the *listener's* state asks for both halves at once, fewer words **and** the context you were missing. It also reuses the leading words already in your global `CLAUDE.md`, so the skill, `CLAUDE.md` and every `CONTEXT.md` reach for the same tokens.
+
+It's the extinguisher, not the sprinkler. The cure for jargon is a shared language built upfront with `/grill-with-docs`; this is the in-the-moment corrective for when you don't have one yet.

.claude-plugin/plugin.json

@@ -42,6 +42,7 @@
     "./skills/productivity/handoff",
     "./skills/productivity/teach",
     "./skills/productivity/to-questionnaire",
+    "./skills/productivity/wait-what",
     "./skills/productivity/writing-for-agents"
   ]
 }

README.md

@@ -223,6 +223,7 @@ General workflow tools, not code-specific.
 - **[handoff](./skills/productivity/handoff/SKILL.md)** — Compact the current conversation into a handoff document so another agent can continue the work.
 - **[teach](./skills/productivity/teach/SKILL.md)** — Teach the user a new skill or concept over multiple sessions, using the current directory as a stateful teaching workspace.
 - **[to-questionnaire](./skills/productivity/to-questionnaire/SKILL.md)** — Turn a decision you can't answer alone into a Markdown questionnaire for the one person who can — filled in async, or together over a meeting. It grills you about the send (who it's for, what you need back), not the subject.
+- **[wait-what](./skills/productivity/wait-what/SKILL.md)** — Fire this the moment a message doesn't land. The agent re-pitches it with the context you're missing, in plain English, using your `CONTEXT.md` vocabulary.
 - **[writing-for-agents](./skills/productivity/writing-for-agents/SKILL.md)** — Writing documents for agents: skills, AGENTS.md/CLAUDE.md, and any doc an agent reaches by a pointer.
 
 **Model-invoked**

docs/engineering/ask-matt.md

@@ -26,6 +26,10 @@ Reach for it whenever you're unsure which skill or flow a situation calls for: y
 
 The idea `ask-matt` gives you to think with is the **flow** — a path *through* the skills rather than a single one. Most work runs along one **main flow** (idea → ship: grill → spec → tickets → implement → review), two **on-ramps** merge onto it (a triage lane for incoming bugs and requests; a codebase-health lane that generates ideas), and everything else is a **standalone** you reach for on its own. Ask a question and you get placed on the right flow, at the right step — not just handed a tool.
 
+## Phase boundaries
+
+The other idea it hands you is the **phase boundary**. A **phase** is a chunk of work inside a session — the grilling, the implementation, the QA — and the boundary between two of them is where you decide what to do with the context you've built up. You have five options: **continue**, **`/clear`**, **`/handoff`**, a **subagent**, or **`/compact`**. `ask-matt` carries the decision tree that orders them, and the two corrections most people need: `/handoff` is narrow — it earns its keep only when something has to *travel* (a new harness, a new directory, a colleague, a side task forked mid-phase) — and `/compact` is the tree's default at the bottom, not its first reach. Reach for the tree at a boundary; mid-phase there's nothing to decide.
+
 ## Where it fits
 
 `ask-matt` is the **router** — the standalone map that sits over the whole set. It is the node every other docs page links back to as [ask-matt](https://aihero.dev/skills-ask-matt), so it never sits *in* a chain; it points *into* every chain. From here you'll most often land on [grill-with-docs](https://aihero.dev/skills-grill-with-docs), the head of the main flow, or [triage](https://aihero.dev/skills-triage), the on-ramp for work you didn't create. When even the router's own picture is stale, its [Source](https://github.com/mattpocock/skills/tree/main/skills/engineering/ask-matt) is the map of record.

docs/productivity/wait-what.md

@@ -0,0 +1,48 @@
+Quickstart:
+
+```bash
+npx skills@latest add mattpocock/skills --skill=wait-what
+```
+
+```bash
+npx skills@latest update wait-what
+```
+
+[Source](https://github.com/mattpocock/skills/tree/main/skills/productivity/wait-what)
+
+## What it does
+
+`wait-what` is the fire extinguisher for a message that didn't land. You fire it the moment you lose the thread, and the agent re-pitches what it just said: a little of the context you were missing, plain English, and the vocabulary from your project's `CONTEXT.md`.
+
+It is three lines long, and that is the design rather than an unfinished draft. Skills that fight verbosity fail by growing — a four-hundred-line concision skill still leaves the model verbose, because the model reads the volume, not the plea. This one carries a single precise leading word and nothing else.
+
+## When to reach for it
+
+You invoke this by typing `/wait-what` — the agent won't reach for it on its own, and it shouldn't: only you know when you stopped following.
+
+Reach for it the second you notice you're skimming — the agent has drifted into jargon it invented, stacked five acronyms, or explained a decision whose premise you never saw. It's a one-shot corrective on the conversation you're already in. To stop the jargon arriving in the first place, use [grill-with-docs](https://aihero.dev/skills-grill-with-docs) instead, which builds the shared language upfront.
+
+## The name is the mechanism
+
+The leading word is **wait**. Not "be concise" — an instruction about the agent's output, which the model satisfies by clipping words and losing you further. **Wait** is about *your* state: it says comprehension failed here. An agent that hears "be brief" writes telegrams. An agent that hears "wait, you lost me" backs up and explains.
+
+That distinction is the whole skill. Every popular fix for verbosity — `/tldr`, `/no-fluff`, `/talk-normal` — names the *output*, so the model over-corrects into a caveman register that's shorter and no clearer. Naming the *listener* asks for both halves at once: fewer words **and** the context you were missing.
+
+The re-pitch is deliberately vague about its own scope. It says re-pitch **that**, not "that last message", because what lost you is usually bigger than one paragraph — the agent decides how far back to go.
+
+## It plugs into the language you already have
+
+The body reuses the leading words already sitting in your global `CLAUDE.md` and your project's `CONTEXT.md`: ASD-STE100 Simplified Technical English for the register, ubiquitous language for the nouns. Skill, `CLAUDE.md` and `CONTEXT.md` reach for the same tokens, so firing it isn't a new instruction — it's a reminder of one the agent already agreed to.
+
+If you have no `CONTEXT.md`, it still works; you just lose the domain-vocabulary half.
+
+## It's working if
+
+- The re-pitch is **shorter and clearer**, not shorter and blunter.
+- It adds the premise you were missing rather than just deleting words.
+- Project nouns replace invented ones — the terms in your `CONTEXT.md` come back.
+- You can fire it twice in a row without it degrading into terseness.
+
+## Where it fits
+
+`wait-what` is a reach-for-it-anytime standalone — it sits inside whatever conversation you're already having, in any skill, at any point. It's the extinguisher; [grill-with-docs](https://aihero.dev/skills-grill-with-docs) is the sprinkler system, because a shared language agreed upfront is the real cure for jargon, and [domain-modeling](https://aihero.dev/skills-domain-modeling) is what you reach for when the *words themselves* are the problem rather than one bad message. When you're unsure which skill fits the moment, [ask-matt](https://aihero.dev/skills-ask-matt) routes you.

skills/engineering/ask-matt/PHASE-BOUNDARIES.md

@@ -0,0 +1,55 @@
+# Phase boundaries
+
+A **phase** is a chunk of work inside a session — the grilling, the implementation, the QA. The definition is fuzzy on purpose: a phase ends when you think *"ok, we're done with that"*.
+
+The **phase boundary** is the gap between two phases, and it is the only place this decision belongs. Mid-phase there is no decision to make — continue, or split the work that's left into subagents. Compacting mid-phase makes the agent lose the thread.
+
+## The five options
+
+| Option       | What it does                                                    |
+| ------------ | --------------------------------------------------------------- |
+| **Continue** | Stay in the session. No context switch at all.                    |
+| **`/clear`** | Empty the context window and start from nothing.                  |
+| **`/handoff`** | Write a portable markdown file and seed a session anywhere with it. |
+| **Subagent** | Send the task to its own context window and get a report back.     |
+| **`/compact`** | Compress this context and seed a fresh session with the summary.  |
+
+## The tree
+
+Work top to bottom at the boundary. The first **yes** wins.
+
+**1. Can you continue in this session?** Two things make the answer yes: the next phase needs this phase as a **primary source**, or you have enough [smart zone](https://www.aihero.dev/ai-coding-dictionary/smart-zone) left (~150k tokens) for the next phase to fit. Grilling → implementation is the standard yes: the implementation wants the reasoning verbatim, not a summary of it. Continue costs nothing and loses nothing, so rule it out before anything else.
+
+**2. Is the context irrelevant to what comes next?** Is everything in this session — the exploration, the decisions, the dead ends — disposable? If so, **`/clear`**. It is the cheapest move on the board: it takes no time and hands back the whole window. `/clear` also isn't terminal — the old session stays resumable.
+
+The cost of getting this wrong is one-way. Clear a *relevant* context and you lose the **why** behind what you built, and no amount of reading the diff back gets it returned.
+
+**3. Do you need to hand off?** `/handoff` is narrow. You need it only when you are:
+
+- swapping to a **new harness** (Claude → Codex),
+- moving to a **new directory** or repo,
+- sending the work to a **colleague**,
+- or forking a side task you found **mid-phase** without derailing what you're doing.
+
+That list is the whole clause. What `/handoff` buys is **portability** — a file that travels. If nothing is travelling, you don't need it.
+
+**4. Can the task be done AFK?** Is it scoped tightly enough to run with you away from the keyboard, no steering? Then send it to a **subagent** and leave this session untouched. Automated review is the standard case: the agent reads the diff and reports, and you aren't needed while it does.
+
+**5. Otherwise, `/compact`.** Relevant context, same harness, same directory, and you need to stay in the loop — this is where the tree lands, and it lands here often. Pass it an instruction (`/compact we're going to QA this area`) so the summary keeps what the next phase needs.
+
+`/compact` is the **default, not the first reach**. It sits at the bottom because the four questions above it are all cheaper or more precise. The failure mode when people start here is a fresh session that is confidently wrong about a decision the summary flattened.
+
+## Primary and secondary sources
+
+Every move except **Continue** turns a **primary source** into a **secondary source** — the session as it happened, replaced by a summary of it. The trade is always the same shape:
+
+| Source                            | Information | Noise | Room to move |
+| --------------------------------- | ----------- | ----- | ------------ |
+| Primary (Continue)                | Full        | Lots  | Little       |
+| Secondary (`/compact`, `/handoff`) | Lossy       | Less  | Lots         |
+
+This is why question 1 comes first. You only pay the lossiness when staying costs more than it saves.
+
+## These are judgement calls
+
+The questions are not objective — each has taste in it, and the same boundary can go two ways on two days. The value is in asking them **in order**, at the boundary rather than in the middle of the work.

skills/engineering/ask-matt/SKILL.md

@@ -15,12 +15,12 @@ A **flow** is a path through the skills. Most paths run along one **main flow**,
 The route most work travels. You have an idea and want it built.
 
 1. **`/grill-with-docs`** — sharpen the idea by interview. Start here when you **have a codebase**: it's stateful, retaining what it learns in `CONTEXT.md` and ADRs. (No codebase? Use `/grill-me` — see Standalone. Both run the same `/grilling` primitive; `grill-with-docs` is the one that leaves a paper trail.)
-2. **Branch — can you settle every question in conversation?** If a question needs a runnable answer (state, business logic, a UI you have to see), detour through a prototype, bridged by **`/handoff`** in both directions (see Crossing sessions):
+2. **Branch — can you settle every question in conversation?** If a question needs a runnable answer (state, business logic, a UI you have to see), detour through a prototype, bridged by **`/handoff`** in both directions (a prototype lives in its own directory, which is exactly what `/handoff` is for — see Phase boundaries):
    - **`/handoff`** out, then open a fresh session against that file,
    - **`/prototype`** to answer the question with throwaway code,
    - **`/handoff`** back what you learned, and reference it from the original idea thread.
 3. **Branch — is this a multi-session build?**
-   - **Yes** → **`/to-spec`** (turn the thread into a spec), then **`/to-tickets`** to split it into tracer-bullet tickets, each declaring its **blocking edges**. On a local tracker that's one file per ticket under `.scratch/<feature>/issues/`, worked blockers-first by hand; on a real tracker the edges become native blocking links, so any ticket whose blockers are done can be grabbed — kick off **`/implement`** per ticket, **clearing context between each one**.
+   - **Yes** → **`/to-spec`** (turn the thread into a spec), then **`/to-tickets`** to split it into tracer-bullet tickets, each declaring its **blocking edges**. On a local tracker that's one file per ticket under `.scratch/<feature>/issues/`, worked blockers-first by hand; on a real tracker the edges become native blocking links, so any ticket whose blockers are done can be grabbed — kick off **`/implement`** per ticket, **`/clear`ing context between each one**. Each ticket is self-contained, so the last one's context is disposable.
    - **No** → **`/implement`** right here, in the same context window.
 
    Either way, **`/implement`** builds each issue by driving **`/tdd`** internally — one red-green slice at a time — then closes out by running **`/code-review`**, a two-axis review (Standards + Spec) of the diff, before committing. Reach for **`/tdd`** on its own when you just want to build a concrete behaviour test-first without a full spec, and **`/code-review`** on its own whenever you want to review a branch or PR against a fixed point.
@@ -29,7 +29,7 @@ The route most work travels. You have an idea and want it built.
 
 Keep steps 1–3 in **one unbroken context window** — don't compact or clear until after `/to-tickets` — so the grilling, spec, and tickets all build on the same thinking. Each `/implement` then starts fresh, working from the ticket.
 
-The limit on this is the **[smart zone](https://www.aihero.dev/ai-coding-dictionary/smart-zone)**: the window (~120k tokens on state-of-the-art models) within which the model still reasons sharply. If a session approaches it before `/to-tickets`, don't push on degraded — `/handoff` and continue in a fresh thread.
+The limit on this is the **[smart zone](https://www.aihero.dev/ai-coding-dictionary/smart-zone)**: the window (~150k tokens on state-of-the-art models) within which the model still reasons sharply. If a session approaches it before `/to-tickets`, don't push on degraded — `/compact` at the nearest phase boundary and carry on (see Phase boundaries).
 
 ## On-ramps
 
@@ -58,10 +58,17 @@ Two model-invoked references that run *beneath* the other skills — each the si
 - **`/domain-modeling`** — sharpen the project's *domain* language: challenge a fuzzy term, resolve an overloaded word ("account" doing three jobs), record a hard-to-reverse decision as an ADR. It's the active discipline `/grill-with-docs` drives to keep `CONTEXT.md` a clean glossary.
 - **`/codebase-design`** — the deep-module vocabulary (module, interface, depth, seam, adapter, leverage, locality) for designing a module's *shape*: a lot of behaviour behind a small interface at a clean seam. `/tdd` and `/improve-codebase-architecture` both speak it.
 
-## Crossing sessions
+## Phase boundaries
 
-- **`/handoff`** — when a thread is full or you need to branch off (e.g. into a `/prototype` session), this compacts the conversation into a markdown file. You don't continue in place — you **open a new session and reference that file** to carry the context across. It's the bridge between context windows, in either direction. Use it when you want a **fresh session** but need the **current conversation preserved**.
-- **`/compact`** (built-in) — stay in the **same conversation**, letting the earlier turns be summarized. Use it at **intentional breaks between phases**, when you don't mind losing the verbatim history. Don't compact mid-phase — the agent can lose its way. `/handoff` forks; `/compact` continues.
+A **phase** is a chunk of work inside a session — the grilling, the implementation, the QA. At the **boundary** between two of them you have five options, and picking between them is the fuzziest decision in this whole map:
+
+- **Continue** — stay put. Costs nothing, loses nothing.
+- **`/clear`** — empty the window, when nothing here matters to what's next.
+- **`/handoff`** — write a portable markdown file. Narrow: only for a **new harness**, a **new directory**, a **colleague**, or forking a side task **mid-phase**. What it buys is portability.
+- **Subagent** — send a tightly-scoped task to its own window and get a report back.
+- **`/compact`** — compress this context and seed a fresh session with it. The **default**, at the bottom of the tree rather than the first reach.
+
+Read [PHASE-BOUNDARIES.md](PHASE-BOUNDARIES.md) for the ordered tree — the five questions, the reasoning behind each branch, and why the primary-source cost makes **Continue** the one to rule out first. Make the decision **at** a boundary; mid-phase, continue or split the rest into subagents.
 
 ## Standalone
 
@@ -72,6 +79,7 @@ Off the main flow entirely.
 - **`/research`** — delegate reading legwork to a **background agent**: it investigates a question against **primary sources**, then leaves a cited Markdown file in the repo. Keep working while it reads. The file it produces is something to take *into* the main flow at `/grill-with-docs` — research feeds the thinking, it doesn't replace it.
 - **`/to-questionnaire`** — when the thing blocking you isn't in your head or the codebase but in **someone else's**, this writes them a questionnaire to fill in. It's the inverse of `/grill-me`: instead of interviewing you about the subject, it interviews you about the **send** — who it's going to, what you need back — and aims the questions at the gap. What comes back is material for `/grill-with-docs` or `/to-spec`.
 - **`/wizard`** — for the steps only a **human** can take: clicking through a third-party dashboard, running a one-off migration, moving the project from state A to state B. It generates an interactive bash script that opens each URL, captures each value, and writes it into `.env` and GitHub secrets — so the procedure stops being something you re-explain to an agent every time. If the agent could just do it itself, it should; reach for this only where a human is genuinely in the loop.
+- **`/wait-what`** — the fire extinguisher for a message that didn't land. Fire it mid-conversation, inside any other skill, and the agent re-pitches what it just said with the context you were missing, in plain English, using the `CONTEXT.md` vocabulary. It's the in-the-moment corrective; `/grill-with-docs` and `/domain-modeling` are the upfront cure, because a shared language agreed early is what stops the jargon arriving at all.
 - **`/teach`** — learn a concept over multiple sessions, using the current directory as a stateful workspace.
 - **`/writing-for-agents`** — reference for writing documents agents consume: skills, AGENTS.md, pointed-at docs.
 

skills/productivity/README.md

@@ -10,6 +10,7 @@ Reachable only when you type them (Claude Code: `disable-model-invocation: true`
 - **[handoff](./handoff/SKILL.md)** — Compact the current conversation into a handoff document so another agent can continue the work.
 - **[teach](./teach/SKILL.md)** — Teach the user a new skill or concept over multiple sessions, using the current directory as a stateful teaching workspace.
 - **[to-questionnaire](./to-questionnaire/SKILL.md)** — Turn a decision you can't answer alone into a Markdown questionnaire for the one person who can — filled in async, or together over a meeting.
+- **[wait-what](./wait-what/SKILL.md)** — Fire this the moment a message doesn't land. The agent re-pitches it with the context you're missing, in plain English, using your `CONTEXT.md` vocabulary.
 - **[writing-for-agents](./writing-for-agents/SKILL.md)** — Writing documents for agents: skills, AGENTS.md/CLAUDE.md, and any doc an agent reaches by a pointer.
 
 ## Model-invoked

skills/productivity/wait-what/SKILL.md

@@ -0,0 +1,7 @@
+---
+name: wait-what
+description: Stop. That last message did not land — re-pitch it.
+disable-model-invocation: true
+---
+
+Wait — I don't understand where you've got to here. Re-pitch that: give me a little bit of context, talk in ASD-STE100 Simplified Technical English, and use the ubiquitous language from `CONTEXT.md`.

skills/productivity/wait-what/agents/openai.yaml

@@ -0,0 +1,5 @@
+interface:
+  display_name: "Wait What"
+  short_description: "Re-pitch that — simpler, with the context I'm missing"
+policy:
+  allow_implicit_invocation: false