cursor · poteto · Jul 8, 2026 · Jul 8, 2026
diff --git a/pstack/.cursor-plugin/plugin.json b/pstack/.cursor-plugin/plugin.json
@@ -1,7 +1,7 @@
 {
 	"name": "pstack",
 	"displayName": "pstack",
-	"version": "0.10.0",
+	"version": "0.10.1",
 	"description": "if you want to go fast, go deep first. pstack helps you write less, but higher quality code. rigorous agent workflows you can parallelize with confidence.",
 	"author": {
 		"name": "Lauren Tan"

diff --git a/pstack/skills/architect/SKILL.md b/pstack/skills/architect/SKILL.md
@@ -30,7 +30,7 @@ Skip Phase A only when the work is genuinely greenfield with no surrounding syst
 
 Run the **arena** skill with the design-sketch task and the Phase A grounding artifacts. Pass `references/runner-prompt.md` as each runner's prompt. Each candidate produces a design package shaped per `references/rationale-template.md`: the caller's usage written first, then the type sketch, function signatures, module map, and prose rationale derived from it.
 
-Use your configured architect runners (defaults `claude-opus-4-8-thinking-xhigh`, `gpt-5.5-high-fast`, `composer-2.5-fast`).
+Use your configured architect runners (defaults `claude-opus-4-8-thinking-xhigh`, `gpt-5.5-high-fast`, `grok-4.5-fast-xhigh`).
 
 This is the **exhaust-the-design-space** principle skill made concrete. Whole-shape alternatives, not point fixes inside one shape.
 

diff --git a/pstack/skills/arena/SKILL.md b/pstack/skills/arena/SKILL.md
@@ -25,7 +25,7 @@ The N candidates will receive the same prompt, so the prompt is the contract. Ge
 
 1. State the artifact each candidate is producing.
 2. Derive the rubric. State what success looks like for *this* task, then turn it into 3-6 concrete gradeable criteria. Concrete: `Adds a --dry-run flag that skips writes`. Vague: `code is correct`. The rubric is the picker's tool in Phase D; candidates only see the task.
-3. Pick the runners. Default runners are your configured arena list (defaults `claude-opus-4-8-thinking-xhigh`, `gpt-5.5-high-fast`, `composer-2.5-fast`). Spawn more when the arena covers multiple design directions. Same model N times when the work is generation-bound rather than judgment-sensitive.
+3. Pick the runners. Default runners are your configured arena list (defaults `claude-opus-4-8-thinking-xhigh`, `gpt-5.5-high-fast`, `grok-4.5-fast-xhigh`). Spawn more when the arena covers multiple design directions. Same model N times when the work is generation-bound rather than judgment-sensitive.
 4. Assign output paths. Each candidate writes to its own location (a git worktree where possible, otherwise `/tmp/arena-<slug>/candidate-<n>/`). N candidates writing to the same path is shared mutable state and fails the the **separate-before-serializing-shared-state** principle skill test.
 
 ## Phase B: Fan out

diff --git a/pstack/skills/how/SKILL.md b/pstack/skills/how/SKILL.md
@@ -45,7 +45,7 @@ The right decomposition depends on the question. Use your judgment. Narrow quest
 Spawn all explorers in a single message:
 
 - `subagent_type`: `generalPurpose`
-- `model`: your configured how-explorer model (default `composer-2.5-fast`)
+- `model`: your configured how-explorer model (default `grok-4.5-fast-xhigh`)
 - `readonly`: `true`
 
 Each explorer gets the same base prompt from `references/explorer-prompt.md` plus a specific exploration angle naming its slice. Each explorer should:
@@ -109,7 +109,7 @@ Run the full explain flow above (Steps 1-4). You must understand the architectur
 
 ### Step 2. Spawn Critics
 
-After the explanation is complete, spawn one architectural critic per model in your configured how-critics list (defaults `claude-opus-4-8-thinking-xhigh`, `gpt-5.5-high-fast`, `composer-2.5-fast`), all in a single message.
+After the explanation is complete, spawn one architectural critic per model in your configured how-critics list (defaults `claude-opus-4-8-thinking-xhigh`, `gpt-5.5-high-fast`, `grok-4.5-fast-xhigh`), all in a single message.
 
 For each critic:
 - `subagent_type`: `generalPurpose`

diff --git a/pstack/skills/interrogate/SKILL.md b/pstack/skills/interrogate/SKILL.md
@@ -33,7 +33,7 @@ Write one clear paragraph. Reviewers challenge whether the work achieves the int
 
 ## Step 3, Spawn Reviewers
 
-Launch one reviewer per model in your configured interrogate list (defaults `claude-opus-4-8-thinking-xhigh`, `gpt-5.5-high-fast`, `composer-2.5-fast`), all in a single message.
+Launch one reviewer per model in your configured interrogate list (defaults `claude-opus-4-8-thinking-xhigh`, `gpt-5.5-high-fast`, `grok-4.5-fast-xhigh`), all in a single message.
 
 For each reviewer:
 - `subagent_type`: `generalPurpose`

diff --git a/pstack/skills/poteto-mode/SKILL.md b/pstack/skills/poteto-mode/SKILL.md
@@ -79,7 +79,7 @@ Read the leaf skill in full for any principle you apply. Each entry names when i
 
 **Use `subagent_type: "poteto-agent"` for any subagent you spawn inside a playbook step** (code-writing delegates, ad-hoc helpers). `/poteto-mode` and `poteto-agent` route through the same wrapper. Routed workflow skills (`how`, `why`, `interrogate`, `reflect`) set their own `subagent_type` for diverse-model review; respect what the skill prescribes, don't override to `poteto-agent`.
 
-**Defaults for every `Task` call.** `run_in_background: true`, agent mode (readonly strips MCP), file pointers not inlined context, explicit model per role (configurable via `/setup-pstack`; defaults `composer-2.5-fast` for code, `claude-opus-4-8-thinking-xhigh` for prose and judgment).
+**Defaults for every `Task` call.** `run_in_background: true`, agent mode (readonly strips MCP), file pointers not inlined context, explicit model per role (configurable via `/setup-pstack`; defaults `grok-4.5-fast-xhigh` for code, `claude-opus-4-8-thinking-xhigh` for prose and judgment).
 
 You own every subagent's work. Review the diff and write your own summary, don't pass through what it said. Interrupt-chained resumes silently drop directives, so fire a fresh subagent with consolidated scope rather than trusting a "done" summary. A second opinion is the same prompt against a different model. Agreement is high-signal.
 

diff --git a/pstack/skills/poteto-mode/playbooks/feature.md b/pstack/skills/poteto-mode/playbooks/feature.md
@@ -9,7 +9,7 @@
    - **Independent workstreams.** Disjoint files, services, or layers parallelize. Shared writes serialize.
    - **Shared mutable state.** Default to splitting the target (the **separate-before-serializing-shared-state** principle skill). Serialize only for real invariants.
    - **Smallest safe decomposition.** If one worker is best, name why.
-4. Delegate code-writing to a subagent using your configured feature model (default `composer-2.5-fast`) with a specific scope (file paths, named data shape, success criteria); review its diff yourself. When the implementation admits multiple valid shapes (error handling, abstraction layer, test structure), delegate via the **arena** skill instead so the runners surface the alternatives and the cross-judge guards the pick. Mandatory: no skip-with-reason escape, and Laziness Protocol does not override it (the gain is review separation, not lines saved). You can spawn a subagent even though you are one; "the app is small" and "a subagent cannot spawn one" are both wrong. A subagent forbidden to spawn satisfies this by owning the diff directly with the same review separation; no "standing by" reply that waits on a nested agent. Comments per **Comments**. Surgical edits, re-ground against the source for upstream-derived files. Port shared-primitive improvements to all consumers and verify each. Commit liberally.
+4. Delegate code-writing to a subagent using your configured feature model (default `grok-4.5-fast-xhigh`) with a specific scope (file paths, named data shape, success criteria); review its diff yourself. When the implementation admits multiple valid shapes (error handling, abstraction layer, test structure), delegate via the **arena** skill instead so the runners surface the alternatives and the cross-judge guards the pick. Mandatory: no skip-with-reason escape, and Laziness Protocol does not override it (the gain is review separation, not lines saved). You can spawn a subagent even though you are one; "the app is small" and "a subagent cannot spawn one" are both wrong. A subagent forbidden to spawn satisfies this by owning the diff directly with the same review separation; no "standing by" reply that waits on a nested agent. Comments per **Comments**. Surgical edits, re-ground against the source for upstream-derived files. Port shared-primitive improvements to all consumers and verify each. Commit liberally.
 5. Verify on the matching surface. "Inconclusive" or wrong-surface is not a pass; flag it.
 6. Rebase into small, ordered commits; stack follow-ups.
    Use the **sequence-verifiable-units** principle skill, building, verifying, and committing each small unit before the next.

diff --git a/pstack/skills/poteto-mode/playbooks/refactoring.md b/pstack/skills/poteto-mode/playbooks/refactoring.md
@@ -7,7 +7,7 @@ If the cleanup reveals a missing feature or a real bug, split it out and ship th
 1. Pin the behavior contract first. Run the **how** skill over the affected subsystem to learn the contract, then write a characterization test, snapshot, or equivalence harness that captures current behavior before any structure moves. The harness makes "refactor" a checkable claim (**principle-prove-it-works**). If the area has no coverage, write the pin before touching structure. Type check and lint are not a pin.
 2. Name the target shape. State what the module layout, types, and call graph should be if built today (**principle-foundational-thinking**, **principle-redesign-from-first-principles**). If the target crosses a function boundary, run the **architect** skill for parallel design exploration of the shape before the move.
 3. Subtract before you add. Delete dead weight, collapse one-caller wrappers, drop redundant validators, and remove orphan references before introducing the new shape (**principle-subtract-before-you-add**). The smallest change that reaches the target shape ships (**principle-laziness-protocol**). A speculative cleanup that "might help" gets reverted, not left to ride.
-4. Move in small behavior-preserving steps, each keeping the pin green. For API reshapes, migrate every caller and delete the old API in the same wave (**principle-migrate-callers-then-delete-legacy-apis**). No compatibility shims, no parallel old-and-new paths. Spot-check every rename against the actual files; renames silently miss usages in strings, prose, and back-references. Delegate the mechanical edits to a subagent using your configured refactoring model (default `composer-2.5-fast`) with a specific scope (file paths, the names being moved, the behavior to hold); review the diff yourself.
+4. Move in small behavior-preserving steps, each keeping the pin green. For API reshapes, migrate every caller and delete the old API in the same wave (**principle-migrate-callers-then-delete-legacy-apis**). No compatibility shims, no parallel old-and-new paths. Spot-check every rename against the actual files; renames silently miss usages in strings, prose, and back-references. Delegate the mechanical edits to a subagent using your configured refactoring model (default `grok-4.5-fast-xhigh`) with a specific scope (file paths, the names being moved, the behavior to hold); review the diff yourself.
 5. Prove behavior is unchanged on the real artifact, not "it compiles" (**principle-prove-it-works**). For larger reshapes, run an equivalence check: a script that diffs old-vs-new outputs, a recorded baseline replayed against the new code, or a smoke run on the matching surface via the relevant control skill. Own the verification yourself; do not trust a delegate's "looks good" summary.
 6. Confirm the change earns its place. The success measure is reduced reader load (**principle-minimize-reader-load**): fewer layers between question and answer, less hidden state, fewer indirections without a second consumer. If the diff does not lower reader load somewhere, revert it.
 7. Rebase into small ordered commits that tell the story. A subtraction commit, then the reshape, then any follow-on cleanup, so a single revert undoes one slice. Shape them with the **sequence-verifiable-units** principle skill, so each behavior-preserving slice stays green before the next. Run **Opening a PR**.

diff --git a/pstack/skills/poteto-mode/references/plan.md b/pstack/skills/poteto-mode/references/plan.md
@@ -25,7 +25,7 @@ Resolve what is in scope vs explicitly out, technical or platform constraints, p
 Delegate codebase exploration (the **guard-the-context-window** principle skill).
 
 - Prefer `subagent_type: "poteto-agent"`. `generalPurpose` is the fallback. Never use the built-in `plan` subagent_type; it ignores this skill.
-- Pass `model:` explicitly per the configured roles (defaults `composer-2.5-fast` for code, `claude-opus-4-8-thinking-xhigh` for judgment).
+- Pass `model:` explicitly per the configured roles (defaults `grok-4.5-fast-xhigh` for code, `claude-opus-4-8-thinking-xhigh` for judgment).
 
 Each explorer returns file pointers, conventions, dependencies, test infrastructure, and entry points. No inlined dumps.
 

diff --git a/pstack/skills/reflect/SKILL.md b/pstack/skills/reflect/SKILL.md
@@ -39,7 +39,7 @@ One message, three `Task` calls, `subagent_type: generalPurpose`, explicit `mode
 | Lens | `model` | Prompt template |
 |---|---|---|
 | Judgment | your configured reflect-judgment model (default `claude-opus-4-8-thinking-xhigh`) | `references/judgment-reviewer.md` |
-| Tooling | your configured reflect-tooling model (default `composer-2.5-fast`) | `references/tooling-reviewer.md` |
+| Tooling | your configured reflect-tooling model (default `grok-4.5-fast-xhigh`) | `references/tooling-reviewer.md` |
 | Divergent | your configured reflect-judgment model (default `claude-opus-4-8-thinking-xhigh`) | `references/divergent-reviewer.md` |
 
 Pass each template verbatim, substituting the transcript path or digest where marked. Reviewers return findings in the `Task` response body.

diff --git a/pstack/skills/setup-pstack/SKILL.md b/pstack/skills/setup-pstack/SKILL.md
@@ -35,21 +35,21 @@ description: pstack per-role model choices (overrides skill defaults)
 alwaysApply: true
 ---
 # pstack model configuration. One line per role. Delete a line to fall back to the skill default.
-feature, refactoring: composer-2.5-fast
+feature, refactoring: grok-4.5-fast-xhigh
 bug-fix: gpt-5.5-high-fast
 perf-issue: gpt-5.5-high-fast
 hillclimb: gpt-5.5-high-fast
 judgment and prose: claude-opus-4-8-thinking-xhigh
-how explorer: composer-2.5-fast
+how explorer: grok-4.5-fast-xhigh
 how explainer: claude-opus-4-8-thinking-xhigh
-how critics: claude-opus-4-8-thinking-xhigh, gpt-5.5-high-fast, composer-2.5-fast
-why investigators: composer-2.5-fast
+how critics: claude-opus-4-8-thinking-xhigh, gpt-5.5-high-fast, grok-4.5-fast-xhigh
+why investigators: grok-4.5-fast-xhigh
 why synthesizer: claude-opus-4-8-thinking-xhigh
-reflect tooling: composer-2.5-fast
+reflect tooling: grok-4.5-fast-xhigh
 reflect judgment, divergent, synthesizer: claude-opus-4-8-thinking-xhigh
-arena runners: claude-opus-4-8-thinking-xhigh, gpt-5.5-high-fast, composer-2.5-fast
-architect runners: claude-opus-4-8-thinking-xhigh, gpt-5.5-high-fast, composer-2.5-fast
-interrogate reviewers: claude-opus-4-8-thinking-xhigh, gpt-5.5-high-fast, composer-2.5-fast
+arena runners: claude-opus-4-8-thinking-xhigh, gpt-5.5-high-fast, grok-4.5-fast-xhigh
+architect runners: claude-opus-4-8-thinking-xhigh, gpt-5.5-high-fast, grok-4.5-fast-xhigh
+interrogate reviewers: claude-opus-4-8-thinking-xhigh, gpt-5.5-high-fast, grok-4.5-fast-xhigh
 ```
 
 ### 6. Confirm

diff --git a/pstack/skills/why/SKILL.md b/pstack/skills/why/SKILL.md
@@ -117,7 +117,7 @@ Launch all matching investigators in a single message so they run concurrently.
 
 Subagent config (each):
 - `subagent_type`: `generalPurpose`
-- `model`: your configured why-investigators model (default `composer-2.5-fast`)
+- `model`: your configured why-investigators model (default `grok-4.5-fast-xhigh`)
 - `readonly`: `false` (agent mode). **Do not use readonly/Ask mode.** It strips MCP access, which disables MCP-backed investigators entirely. The source control investigator would be safe in readonly, but keep modes uniform. Investigators still shouldn't write anything. That's a posture, not a sandbox.
 
 Each investigator gets: