skills: Add /review-uncommitted skill.

.claude/skills/review-uncommitted/SKILL.md

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+---
+name: review-uncommitted
+description: Review the working tree's uncommitted changes along two axes — repo standards and spec fidelity — using parallel sub-agents.
+---
+
+Two-axis review of the diff between `HEAD` and the working tree:
+
+- **Standards** — does the code conform to this repo's documented coding standards?
+- **Spec** — does the code faithfully implement the originating PRD or task file?
+
+Both axes run as **parallel sub-agents** so they don't pollute each other's context, then
+this skill aggregates their findings.
+
+## Process
+
+### 1. Capture the diff
+
+The diff command is `git diff HEAD` — everything uncommitted, staged or not. New files
+must already be tracked (`git add`ed) to show up; this skill doesn't scan for untracked
+files, so that's the caller's responsibility.
+
+Confirm the diff is non-empty before going further. An empty diff should fail here — not
+inside two parallel sub-agents.
+
+### 2. Identify the spec source
+
+Look for the originating spec, in this order:
+
+1. A path the user passed as an argument.
+2. A spec file matching the branch name or feature — `.claude/spec/<feature-slug>.md`.
+3. If nothing is found, ask the user where the spec is. If they say there isn't one, the
+   **Spec** sub-agent will skip and report "no spec available".
+
+### 3. Identify the standards sources
+
+Anything in the repo that documents how code should be written, such as
+`CODING_STANDARDS.md` or `CONTRIBUTING.md`.
+
+On top of whatever the repo documents, the Standards axis always carries the **smell
+baseline** below — a fixed set of Fowler code smells (_Refactoring_, ch.3) that applies
+even when a repo documents nothing. Two rules bind it:
+
+- **The repo overrides.** A documented repo standard always wins; where it endorses
+  something the baseline would flag, suppress the smell.
+- **Always a judgement call.** Each smell is a labelled heuristic ("possible Feature
+  Envy"), never a hard violation — and, like any standard here, skip anything tooling
+  already enforces.
+
+Each smell reads *what it is* → *how to fix*; match it against the diff:
+
+- **Mysterious Name** — a function, variable, or type whose name doesn't reveal what it
+  does or holds. → rename it; if no honest name comes, the design's murky.
+- **Duplicated Code** — the same logic shape appears in more than one hunk or file in the
+  change. → extract the shared shape, call it from both.
+- **Feature Envy** — a method that reaches into another object's data more than its own.
+  → move the method onto the data it envies.
+- **Data Clumps** — the same few fields or params keep travelling together (a type
+  wanting to be born). → bundle them into one type, pass that.
+- **Primitive Obsession** — a primitive or string standing in for a domain concept that
+  deserves its own type. → give the concept its own small type.
+- **Repeated Switches** — the same `switch`/`if`-cascade on the same type recurs across
+  the change. → replace with polymorphism, or one map both sites share.
+- **Shotgun Surgery** — one logical change forces scattered edits across many files in
+  the diff. → gather what changes together into one module.
+- **Divergent Change** — one file or module is edited for several unrelated reasons.
+  → split so each module changes for one reason.
+- **Speculative Generality** — abstraction, parameters, or hooks added for needs the spec
+  doesn't have. → delete it; inline back until a real need shows.
+- **Message Chains** — long `a.b().c().d()` navigation the caller shouldn't depend on.
+  → hide the walk behind one method on the first object.
+- **Middle Man** — a class or function that mostly just delegates onward. → cut it, call
+  the real target direct.
+- **Refused Bequest** — a subclass or implementer that ignores or overrides most of what
+  it inherits. → drop the inheritance, use composition.
+
+### 4. Spawn both sub-agents in parallel
+
+Send a single message with two `Agent` tool calls. Use the `general-purpose` subagent for
+both.
+
+**Standards sub-agent prompt** — include:
+
+- The full diff (output of `git diff HEAD`).
+- The list of standards-source files you found in step 3, **plus the smell baseline from
+  step 3** pasted in full — the sub-agent has no other access to it.
+- The brief: "Report — per file/hunk where relevant — (a) every place the diff violates a
+  documented standard: cite the standard (file + the rule); and (b) any baseline smell you
+  spot: name it and quote the hunk. Distinguish hard violations from judgement calls —
+  documented-standard breaches can be hard, but baseline smells are always judgement
+  calls, and a documented repo standard overrides the baseline. Skip anything tooling
+  enforces. Under 400 words."
+
+**Spec sub-agent prompt** — include:
+
+- The full diff (output of `git diff HEAD`).
+- The path or fetched contents of the spec.
+- The brief: "Report: (a) requirements the spec asked for that are missing or partial;
+  (b) behaviour in the diff that wasn't asked for (scope creep); (c) requirements that
+  look implemented but where the implementation looks wrong. Quote the spec line for each
+  finding. Under 400 words."
+
+If the spec is missing, skip the Spec sub-agent and note this in the final report.
+
+### 5. Aggregate
+
+Present the two reports under `## Standards` and `## Spec` headings, verbatim or lightly
+cleaned. Do **not** merge or rerank findings — the two axes are deliberately separate
+(see _Why two axes_).
+
+End with a one-line summary: total findings per axis, and the worst issue _within each
+axis_ (if any). Don't pick a single winner across axes — that's the reranking the
+separation exists to prevent.
+
+## Why two axes
+
+A change can pass one axis and fail the other:
+
+- Code that follows every standard but implements the wrong thing → **Standards pass,
+  Spec fail.**
+- Code that does exactly what the PRD or task asked but breaks the project's conventions
+  → **Spec pass, Standards fail.**
+
+Reporting them separately stops one axis from masking the other.