diff --git a/CHANGELOG.md b/CHANGELOG.md
index 65c57f156..48b78d9dc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Changelog
 
+## [1.91.160.0] - 2026-10-19
+
+**Dart and Flutter projects get the right reviewers and the right test command.** A Dart change matched no diff-scope category except its test file, so a Flutter widget PR ran only the testing pass and skipped design, performance and security. Contributed by @arlophoenix (#3284).
+
+### Fixed
+- **`gstack-diff-scope` counts `.dart` as both frontend and backend.** The extension cannot tell a Flutter widget from a repository class or a pure-Dart server, and a skipped reviewer is invisible, so both specialists run. `pubspec.lock` (at the root or in a workspace package) is config. `lib/frontend-scope.ts` mirrors the frontend half, and `gstack-design-detect` still never hands a `.dart` file to the impeccable engine, which reads web sources only.
+- **Test detection knows Dart.** `/ship`'s bootstrap and coverage audit, `/design-review` and `/plan-eng-review` print `RUNTIME:dart` for a `pubspec.yaml` and `FRAMEWORK:flutter` for an indented `sdk: flutter` dependency (a commented-out one or an `environment.sdk` constraint does not count). They treat `dart_test.yaml` and `*_test.dart` files anywhere as existing tests and offer `flutter test` or `dart test`. Review-army reports `STACK: dart` and `TEST_FW: dart-test` or `flutter-test`.
+- **Adversarial `DIFF_SIZE` sums `git diff --numstat`,** the same count review-army's `DIFF_LINES` uses, instead of parsing the `--stat` summary line. Binary files count as zero.
+
+### Changed
+- The test-bootstrap prose is shorter so the generated skills stay inside the parity size cap and `/design-review` stays at its SKILL.md size pin. The rules it states are unchanged. `/design-review`, `/plan-eng-review` and `/review` shrink, so their pins in `test/fixtures/skill-md-size-allowlist.json` go down (31 entries).
+- `test/frontend-scope.test.ts`'s bash parity test gets a 30 s budget. It spawns git six times and the scope script once per sample, and it already ran past Bun's 5 s default on a 4-core machine before this change.
+
 ## [1.91.159.0] - 2026-10-19
 
 **Security: the repository gstack runs in can no longer configure gstack's own programs.** Bun loads `.env`, `.env.local` and `.env.<NODE_ENV>` from the directory it starts in. It also runs any `preload` that a `bunfig.toml` there names, before the program's first line. gstack runs inside the repository it audits, so a committed or branch `.env` could set `GSTACK_STATE_ROOT`, `GSTACK_PROJECT_SLUG`, `GSTACK_CLAUDE_BIN` (an attacker-chosen binary then ran as "claude"), `GSTACK_SPEND_CAP_USD` or a provider base URL for every gstack bin, hook and skill step. A `bunfig.toml` preload ran arbitrary code in all of them. Every Bun that gstack starts now passes `--no-env-file` and an empty `--config`. Your shell environment works exactly as before. Found in review by GSTA-54.
diff --git a/VERSION b/VERSION
index 1a457a831..3c90dd4b0 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.91.159.0
+1.91.160.0
diff --git a/agents-digest/gstack-AGENTS.md b/agents-digest/gstack-AGENTS.md
index 3b68c2480..cfb3bc065 100644
--- a/agents-digest/gstack-AGENTS.md
+++ b/agents-digest/gstack-AGENTS.md
@@ -1,4 +1,4 @@
-# gstack digest v1.91.159.0 — regenerate/re-copy after upgrading gstack
+# gstack digest v1.91.160.0 — regenerate/re-copy after upgrading gstack
 
 Behavioral rules from gstack (https://github.com/garrytan/gstack), compressed
 for agent hosts without a full skill install. The full skills add workflows,
diff --git a/bin/gstack-design-detect.ts b/bin/gstack-design-detect.ts
index f327c31b3..22a6cd77a 100755
--- a/bin/gstack-design-detect.ts
+++ b/bin/gstack-design-detect.ts
@@ -829,7 +829,8 @@ function resolveTargets(args: ScanArgs, p: Probe): { targets: string[]; refusedB
     runZ(['diff', '-z', '--name-only', '--diff-filter=ACMR', 'HEAD']);
     runZ(['ls-files', '-z', '--others', '--exclude-standard']);
     for (const rel of [...files].sort()) {
-      if (!isFrontendPath(rel)) continue;
+      // impeccable reads web sources; a Dart file is frontend scope but not a scan target.
+      if (!isFrontendPath(rel) || rel.endsWith('.dart')) continue;
       const abs = path.join(top, rel);
       try { if (fs.lstatSync(abs).isSymbolicLink()) { refuse(rel, 'symlink named by git is never scanned'); continue; } } catch { continue; }
       const real = realpathOrNull(abs);
diff --git a/bin/gstack-diff-scope b/bin/gstack-diff-scope
index 17da9c656..b923f737a 100755
--- a/bin/gstack-diff-scope
+++ b/bin/gstack-diff-scope
@@ -104,6 +104,11 @@ for f in ${FILES_LIST[@]+"${FILES_LIST[@]}"}; do
     *.tsx|*.jsx|*.vue|*.svelte|*.astro) m_frontend=true ;;
     *.erb|*.haml|*.slim|*.hbs|*.ejs) m_frontend=true ;;
     *.html) m_frontend=true ;;
+    # Dart: the extension cannot tell a Flutter widget from a repository or a
+    # pure-Dart server, so it is BOTH frontend and backend (BACKEND set below).
+    # A skipped reviewer is invisible; an extra one (design-lite included) is a
+    # visible pass that costs a review.
+    *.dart) m_frontend=true ;;
     tailwind.config.*|postcss.config.*) m_frontend=true ;;
     app/views/*|*/components/*|styles/*|css/*|app/assets/stylesheets/*) m_frontend=true ;;
   esac
@@ -135,6 +140,7 @@ for f in ${FILES_LIST[@]+"${FILES_LIST[@]}"}; do
     *.yml|*.yaml) m_config=true ;;
     .github/*) m_config=true ;;
     requirements.txt|pyproject.toml|go.mod|Cargo.toml|composer.json) m_config=true ;;
+    pubspec.lock|*/pubspec.lock) m_config=true ;;
   esac
 
   # Migrations: database migration files. Bare migrations/* covers a
@@ -169,6 +175,9 @@ for f in ${FILES_LIST[@]+"${FILES_LIST[@]}"}; do
       *.ts|*.js|*.mjs|*.cjs|*.mts|*.cts) m_backend=true ;;
     esac
   fi
+  case "$f" in
+    *.dart) m_backend=true ;;
+  esac
 
   [ "$m_frontend" = true ] && FRONTEND=true
   [ "$m_prompts" = true ] && PROMPTS=true
diff --git a/design-review/SKILL.md b/design-review/SKILL.md
index 23d5b2c76..42e10d81d 100644
--- a/design-review/SKILL.md
+++ b/design-review/SKILL.md
@@ -525,17 +525,18 @@ Label `$B` output with the same evidence lines (`URL=`, `CONSOLE_ERRORS=`, `DIFF
 
 **Read the project's CLAUDE.md (and TESTING.md if present) FIRST.** If it documents a test command, the project already told you: no detection, no bootstrap. Skip the rest of bootstrap and use that command in Step 5.
 
-**Otherwise gather markers. Every marker below is EVIDENCE for the question you ask — never a command to run blind.** A marker tells you which ecosystem you're in and which command to OFFER. It does not tell you the command works. Do not execute a candidate test command to "check" it: a probe on a project that never had that runner fails loudly and teaches you nothing, and installing a second framework over a working one is worse.
+**Otherwise gather markers. Every marker below is EVIDENCE for the question you ask — never a command to run blind.** A marker names the ecosystem and the command to OFFER; it does not prove the command works. Never execute a candidate to "check" it: probing a runner the project never had fails loudly and teaches nothing.
 
 ```bash
 setopt +o nomatch 2>/dev/null || true  # zsh compat
-# Definitive ecosystem markers (presence = ecosystem, NOT a command to run)
+# Ecosystem markers
 [ -f manage.py ] && echo "RUNTIME:python FRAMEWORK:django MARKER:manage.py"
 { [ -f pyproject.toml ] || [ -f pytest.ini ] || [ -f tox.ini ] || [ -f setup.cfg ] || [ -f requirements.txt ]; } && echo "RUNTIME:python"
 { [ -f Gemfile ] || [ -f Rakefile ] || [ -f .rspec ]; } && echo "RUNTIME:ruby"
 [ -f package.json ] && echo "RUNTIME:node"
 [ -f go.mod ] && echo "RUNTIME:go"
 [ -f Cargo.toml ] && echo "RUNTIME:rust"
+[ -f pubspec.yaml ] && echo "RUNTIME:dart"
 [ -f composer.json ] && echo "RUNTIME:php"
 [ -f mix.exs ] && echo "RUNTIME:elixir"
 [ -f pom.xml ] && echo "RUNTIME:jvm BUILD:maven"
@@ -543,14 +544,14 @@ setopt +o nomatch 2>/dev/null || true  # zsh compat
 # Detect sub-frameworks
 [ -f Gemfile ] && grep -q "rails" Gemfile 2>/dev/null && echo "FRAMEWORK:rails"
 [ -f package.json ] && grep -q '"next"' package.json 2>/dev/null && echo "FRAMEWORK:nextjs"
-# Existing test path — config files, declared scripts, AND test FILES.
-# A project with real tests and no config file is the common miss.
-ls jest.config.* vitest.config.* playwright.config.* .rspec pytest.ini tox.ini phpunit.xml* 2>/dev/null
+grep -qsE '^ +sdk: *.?flutter' pubspec.yaml && echo "FRAMEWORK:flutter"
+# Test evidence: config files, declared scripts, AND test FILES (tested projects often lack a config)
+ls jest.config.* vitest.config.* playwright.config.* .rspec pytest.ini tox.ini phpunit.xml* dart_test.yaml 2>/dev/null
 [ -f package.json ] && grep -q '"test"[[:space:]]*:' package.json && echo "SCRIPT:package.json test"
 [ -f Makefile ] && grep -qE '^(test|check):' Makefile && echo "TARGET:make test"
 [ -f pyproject.toml ] && grep -q "pytest" pyproject.toml && echo "CONFIG:pyproject pytest"
-git ls-files | grep -cE '(^|/)(tests?|spec|__tests__)/|(^|/)tests?\.py$|(^|/)test_[^/]+\.py$|_test\.(go|py|rb|ts|js|exs)$|\.(test|spec)\.[jt]sx?$|_spec\.rb$|Test\.(java|kt)$' | sed 's/^/TESTFILES:/'
-# Rust keeps unit tests inside src/, so file names alone miss them
+git ls-files | grep -cE '(^|/)(tests?|spec|__tests__)/|(^|/)tests?\.py$|(^|/)test_[^/]+\.py$|_test\.(go|py|rb|ts|js|exs|dart)$|\.(test|spec)\.[jt]sx?$|_spec\.rb$|Test\.(java|kt)$' | sed 's/^/TESTFILES:/'
+# Rust unit tests live in src/; file names alone miss them
 [ -f Cargo.toml ] && git grep -lF '#[test]' -- 'src' >/dev/null 2>&1 && echo "TESTS:rust in-source"
 # Check opt-out marker
 [ -f .gstack/no-test-bootstrap ] && echo "BOOTSTRAP_DECLINED"
@@ -564,6 +565,7 @@ Map the markers to the command you will OFFER — never to one you run on a gues
 | `pytest.ini` / `tox.ini` / pytest in `pyproject.toml` / `test_*.py` | Python | `pytest` |
 | `go.mod` (+ any `*_test.go`) | Go | `go test ./...` |
 | `Cargo.toml` | Rust | `cargo test` |
+| `pubspec.yaml` | Dart / Flutter | `flutter test` (FRAMEWORK:flutter) or `dart test`; `fvm` prefix if `.fvmrc` |
 | `pom.xml` | JVM (Maven) | `mvn test` |
 | `build.gradle` / `build.gradle.kts` | JVM (Gradle) | `./gradlew test` |
 | `Gemfile` / `Rakefile` / `.rspec` | Ruby | `bundle exec rspec`, `bin/rails test`, or `rake test` |
@@ -572,11 +574,11 @@ Map the markers to the command you will OFFER — never to one you run on a gues
 | `package.json` with a `test` script | Node | that script, run with the package manager the lockfile names |
 | `Makefile` with a `test:` target | any | `make test` |
 
-**If ANY existing-test evidence appears** (a config file, a declared test script or make target, a nonzero `TESTFILES:` count, or `TESTS:rust in-source`): the project has tests. **Do NOT bootstrap.** Print "Existing tests detected: {the evidence}." Then get the command the same way Step 5 does — CLAUDE.md/TESTING.md if documented, otherwise AskUserQuestion offering the candidates from the table above plus "Other", and persist the answer to CLAUDE.md's `## Testing` section so it is never asked again. When the ecosystem ships a runner (Django, Go, Rust, Elixir, Maven/Gradle), that runner is the candidate — never install a second framework beside a working one.
+**If ANY existing-test evidence appears** (a config file, a declared test script or make target, a nonzero `TESTFILES:` count, or `TESTS:rust in-source`): the project has tests. **Do NOT bootstrap.** Print "Existing tests detected: {the evidence}." Then get the command the same way Step 5 does — CLAUDE.md/TESTING.md if documented, otherwise AskUserQuestion offering the candidates from the table above plus "Other", and persist the answer to CLAUDE.md's `## Testing` section so it is never asked again. When the ecosystem ships a runner (Django, Go, Rust, Dart, Elixir, Maven/Gradle), that runner is the candidate — never install a second framework beside a working one.
 Read 2-3 existing test files to learn conventions (naming, imports, assertion style, setup patterns).
 Store conventions as prose context for use in Phase 8e.5 or Step 7. **Skip the rest of bootstrap.**
 
-Absent config files and absent `tests/` directories are NOT evidence of "no tests": Django keeps tests in `<app>/tests.py`, Go in `*_test.go` beside the source, Rust in `#[test]` blocks inside `src/`. A green `python manage.py test` with no `pytest.ini` is a tested project, not a bootstrap candidate.
+Absent config files and absent `tests/` directories are NOT evidence of "no tests": Django keeps tests in `<app>/tests.py`, Go in `*_test.go` beside the source, Rust in `#[test]` blocks inside `src/`.
 
 **If BOOTSTRAP_DECLINED** appears: Print "Test bootstrap previously declined — skipping." **Skip the rest of bootstrap.**
 
@@ -620,6 +622,7 @@ If Aside is not installed or not running (`command -v aside` prints nothing, or
 | Go | stdlib testing + testify | stdlib only |
 | JVM (Maven/Gradle) | JUnit 5 + AssertJ | JUnit 5 only |
 | Rust | cargo test (built-in) + mockall | — |
+| Dart | test / flutter_test + mocktail | mockito |
 | PHP | phpunit + mockery | pest |
 | Elixir | ExUnit (built-in) + ex_machina | — |
 
diff --git a/docs/skills.md b/docs/skills.md
index 614304063..e6cb489bf 100644
--- a/docs/skills.md
+++ b/docs/skills.md
@@ -413,7 +413,7 @@ It runs an 80-item visual audit on your live site — in your Aside browser, so
 
 The self-regulation heuristic is tuned for design work — CSS-only changes get a free pass (they are inherently safe and reversible), but changes to component JSX/TSX files count against the risk budget. Hard cap at 30 fixes. If the risk score exceeds 20%, it stops and asks.
 
-**Design detector.** When you have [impeccable](https://impeccable.style) installed, its engine runs first: on a URL the page's rendered DOM is dumped (linked styles inlined) and scanned; on a feature branch with no URL the changed frontend files are scanned. Every mechanical finding arrives as a `FINDING-NNN` tagged with its rule id (`[nested-cards]`, `[low-contrast]`), and the report closes with `Detector: N → M`. gstack never runs impeccable's installer; when no engine is present it offers, once, to download the engine binary (checksum-pinned, logged in the egress ledger) and remembers the answer; without it the audit is unchanged. `gstack-config set design_detector off` disables the pre-pass.
+**Design detector.** When you have [impeccable](https://impeccable.style) installed, its engine runs first: on a URL the page's rendered DOM is dumped (linked styles inlined) and scanned; on a feature branch with no URL the changed frontend files are scanned (`.dart` files excepted: they count as frontend scope, but the engine reads web sources). Every mechanical finding arrives as a `FINDING-NNN` tagged with its rule id (`[nested-cards]`, `[low-contrast]`), and the report closes with `Detector: N → M`. gstack never runs impeccable's installer; when no engine is present it offers, once, to download the engine binary (checksum-pinned, logged in the egress ledger) and remembers the answer; without it the audit is unchanged. `gstack-config set design_detector off` disables the pre-pass.
 
 ### Example
 
@@ -586,7 +586,7 @@ Findings get action, not just listed. Obvious mechanical fixes (dead code, stale
 
 One exception: a shortcut you took deliberately and logged. A `gstack-shortcut(dec-<id>)` marker whose decision id resolves in the decision ledger downgrades the finding to acknowledged debt. An orphan marker — one with no ledger entry behind it — doesn't suppress anything; the gap is reported normally and the marker itself gets flagged.
 
-**Design pass.** When the diff touches frontend files, the Design specialist reads `review/design-checklist.md`, which is generated from `lib/design-catalog.ts`, so `/review`, `/ship`, and `/design-review` flag the same patterns under the same rule ids. If you have [impeccable](https://impeccable.style) installed, its engine scans the changed frontend files first: its rows bucket by tier (auto-fix, ask, possible), a detector hit and a checklist hit at the same file:line collapse into one row, and your repo's `.impeccable/config*.json` ignores are read as settled decisions. Without it, the checklist pass runs alone.
+**Design pass.** When the diff touches frontend files, the Design specialist reads `review/design-checklist.md`, which is generated from `lib/design-catalog.ts`, so `/review`, `/ship`, and `/design-review` flag the same patterns under the same rule ids. If you have [impeccable](https://impeccable.style) installed, its engine scans the changed frontend files first (`.dart` files get the checklist pass only): its rows bucket by tier (auto-fix, ask, possible), a detector hit and a checklist hit at the same file:line collapse into one row, and your repo's `.impeccable/config*.json` ignores are read as settled decisions. Without it, the checklist pass runs alone.
 
 ### Example
 
diff --git a/lib/frontend-scope.ts b/lib/frontend-scope.ts
index 0b22c9b64..880741fba 100644
--- a/lib/frontend-scope.ts
+++ b/lib/frontend-scope.ts
@@ -11,6 +11,9 @@ const EXTENSIONS = new Set([
   '.tsx', '.jsx', '.vue', '.svelte', '.astro',
   '.erb', '.haml', '.slim', '.hbs', '.ejs',
   '.html',
+  // Dart: a Flutter widget and a repository share the extension, so the bash
+  // script counts .dart as frontend AND backend; only the frontend half lives here.
+  '.dart',
 ]);
 
 // Root-level only: the bash arm's glob (`tailwind.config.*`) is matched against the
diff --git a/package.json b/package.json
index 03f42b400..493be469b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "gstack",
-  "version": "1.91.159",
+  "version": "1.91.160",
   "description": "Garry's Stack — Claude Code skills + fast headless browser. One repo, one install, entire AI engineering workflow.",
   "license": "MIT",
   "type": "module",
diff --git a/plan-eng-review/sections/review-sections.md b/plan-eng-review/sections/review-sections.md
index 410a4cc2f..0f43c741c 100644
--- a/plan-eng-review/sections/review-sections.md
+++ b/plan-eng-review/sections/review-sections.md
@@ -586,20 +586,21 @@ Before analyzing coverage, detect the project's test framework:
 
 ```bash
 setopt +o nomatch 2>/dev/null || true  # zsh compat
-# Detect project runtime (markers are evidence, not commands to run blind)
+# Runtime markers: evidence, not commands to run
 [ -f manage.py ] && echo "RUNTIME:python FRAMEWORK:django"
 { [ -f pyproject.toml ] || [ -f pytest.ini ] || [ -f tox.ini ] || [ -f setup.cfg ] || [ -f requirements.txt ]; } && echo "RUNTIME:python"
 { [ -f Gemfile ] || [ -f Rakefile ] || [ -f .rspec ]; } && echo "RUNTIME:ruby"
 [ -f package.json ] && echo "RUNTIME:node"
 [ -f go.mod ] && echo "RUNTIME:go"
 [ -f Cargo.toml ] && echo "RUNTIME:rust"
+[ -f pubspec.yaml ] && echo "RUNTIME:dart"
 [ -f pom.xml ] && echo "RUNTIME:jvm BUILD:maven"
 { [ -f build.gradle ] || [ -f build.gradle.kts ]; } && echo "RUNTIME:jvm BUILD:gradle"
-# Check for existing test infrastructure — config files, scripts, AND test files
-ls jest.config.* vitest.config.* playwright.config.* cypress.config.* .rspec pytest.ini tox.ini phpunit.xml 2>/dev/null
+# Test infra: configs, scripts, test files
+ls jest.config.* vitest.config.* playwright.config.* cypress.config.* .rspec pytest.ini tox.ini phpunit.xml dart_test.yaml 2>/dev/null
 [ -f package.json ] && grep -q '"test"[[:space:]]*:' package.json && echo "SCRIPT:package.json test"
 [ -f Makefile ] && grep -qE '^(test|check):' Makefile && echo "TARGET:make test"
-git ls-files | grep -cE '(^|/)(tests?|spec|__tests__)/|(^|/)tests?\.py$|(^|/)test_[^/]+\.py$|_test\.(go|py|rb|ts|js|exs)$|\.(test|spec)\.[jt]sx?$|_spec\.rb$|Test\.(java|kt)$' | sed 's/^/TESTFILES:/'
+git ls-files | grep -cE '(^|/)(tests?|spec|__tests__)/|(^|/)tests?\.py$|(^|/)test_[^/]+\.py$|_test\.(go|py|rb|ts|js|exs|dart)$|\.(test|spec)\.[jt]sx?$|_spec\.rb$|Test\.(java|kt)$' | sed 's/^/TESTFILES:/'
 ```
 
 3. **If no framework detected:** State that the framework is unknown; continue the diagram and planned assertions. If proposing a new framework, settle that choice through Decision procedure in Test step 5. Reuse an exact prior approval; with no selection proposed, ask no framework question. Do not install a framework or write the proposed tests during this review.
diff --git a/review/sections/adversarial.md b/review/sections/adversarial.md
index 07bb94048..374cc2ab0 100644
--- a/review/sections/adversarial.md
+++ b/review/sections/adversarial.md
@@ -8,9 +8,7 @@ Every diff gets the Claude adversarial pass. Add Codex when its preflight is rea
 
 ```bash
 DIFF_BASE=$(git merge-base origin/<base> HEAD)
-DIFF_INS=$(git diff "$DIFF_BASE" --stat | tail -1 | grep -oE '[0-9]+ insertion' | grep -oE '[0-9]+' || echo "0")
-DIFF_DEL=$(git diff "$DIFF_BASE" --stat | tail -1 | grep -oE '[0-9]+ deletion' | grep -oE '[0-9]+' || echo "0")
-DIFF_TOTAL=$((DIFF_INS + DIFF_DEL))
+DIFF_TOTAL=$(git diff "$DIFF_BASE" --numstat | awk '{n+=$1+$2} END {print n+0}')
 echo "DIFF_SIZE: $DIFF_TOTAL"
 ```
 
diff --git a/review/sections/review-army.md b/review/sections/review-army.md
index 2043282e0..f6e17e1c4 100644
--- a/review/sections/review-army.md
+++ b/review/sections/review-army.md
@@ -14,6 +14,7 @@ STACK=""
 [ -f requirements.txt ] || [ -f pyproject.toml ] && STACK="${STACK}python "
 [ -f go.mod ] && STACK="${STACK}go "
 [ -f Cargo.toml ] && STACK="${STACK}rust "
+[ -f pubspec.yaml ] && STACK="${STACK}dart "
 echo "STACK: ${STACK:-unknown}"
 DIFF_BASE=$(git merge-base origin/<base> HEAD)
 DIFF_LINES=$(git diff "$DIFF_BASE" --numstat | awk '{n+=$1+$2} END {print n+0}')
@@ -25,6 +26,7 @@ TEST_FW=""
 { [ -f spec/spec_helper.rb ] || [ -f .rspec ]; } && TEST_FW="rspec"
 { [ -f pytest.ini ] || [ -f conftest.py ]; } && TEST_FW="pytest"
 [ -f go.mod ] && TEST_FW="go-test"
+[ -f pubspec.yaml ] && TEST_FW="dart-test" && grep -qsE '^ +sdk: *.?flutter' pubspec.yaml && TEST_FW="flutter-test"
 echo "TEST_FW: ${TEST_FW:-unknown}"
 ```
 
diff --git a/scripts/resolvers/outside-voice-steps.ts b/scripts/resolvers/outside-voice-steps.ts
index 40d7664ed..b187a1d5d 100644
--- a/scripts/resolvers/outside-voice-steps.ts
+++ b/scripts/resolvers/outside-voice-steps.ts
@@ -243,9 +243,7 @@ Every diff gets the ${outsideVoiceFor(ctx).nativeLabel} adversarial pass. Add ${
 
 \`\`\`bash
 DIFF_BASE=$(git merge-base origin/<base> HEAD)
-DIFF_INS=$(git diff "$DIFF_BASE" --stat | tail -1 | grep -oE '[0-9]+ insertion' | grep -oE '[0-9]+' || echo "0")
-DIFF_DEL=$(git diff "$DIFF_BASE" --stat | tail -1 | grep -oE '[0-9]+ deletion' | grep -oE '[0-9]+' || echo "0")
-DIFF_TOTAL=$((DIFF_INS + DIFF_DEL))
+DIFF_TOTAL=$(git diff "$DIFF_BASE" --numstat | awk '{n+=$1+$2} END {print n+0}')
 echo "DIFF_SIZE: $DIFF_TOTAL"
 \`\`\`
 
diff --git a/scripts/resolvers/review-army.ts b/scripts/resolvers/review-army.ts
index 4601341fd..f8bea9068 100644
--- a/scripts/resolvers/review-army.ts
+++ b/scripts/resolvers/review-army.ts
@@ -33,6 +33,7 @@ STACK=""
 [ -f requirements.txt ] || [ -f pyproject.toml ] && STACK="\${STACK}python "
 [ -f go.mod ] && STACK="\${STACK}go "
 [ -f Cargo.toml ] && STACK="\${STACK}rust "
+[ -f pubspec.yaml ] && STACK="\${STACK}dart "
 echo "STACK: \${STACK:-unknown}"
 DIFF_BASE=$(git merge-base origin/<base> HEAD)
 DIFF_LINES=$(git diff "$DIFF_BASE" --numstat | awk '{n+=$1+$2} END {print n+0}')
@@ -44,6 +45,7 @@ TEST_FW=""
 { [ -f spec/spec_helper.rb ] || [ -f .rspec ]; } && TEST_FW="rspec"
 { [ -f pytest.ini ] || [ -f conftest.py ]; } && TEST_FW="pytest"
 [ -f go.mod ] && TEST_FW="go-test"
+[ -f pubspec.yaml ] && TEST_FW="dart-test" && grep -qsE '^ +sdk: *.?flutter' pubspec.yaml && TEST_FW="flutter-test"
 echo "TEST_FW: \${TEST_FW:-unknown}"
 \`\`\`
 
diff --git a/scripts/resolvers/testing.ts b/scripts/resolvers/testing.ts
index eb43ff804..e66b5b712 100644
--- a/scripts/resolvers/testing.ts
+++ b/scripts/resolvers/testing.ts
@@ -8,17 +8,18 @@ export function generateTestBootstrap(ctx: TemplateContext): string {
 
 **Read the project's CLAUDE.md (and TESTING.md if present) FIRST.** If it documents a test command, the project already told you: no detection, no bootstrap. Skip the rest of bootstrap and use that command in Step 5.
 
-**Otherwise gather markers. Every marker below is EVIDENCE for the question you ask — never a command to run blind.** A marker tells you which ecosystem you're in and which command to OFFER. It does not tell you the command works. Do not execute a candidate test command to "check" it: a probe on a project that never had that runner fails loudly and teaches you nothing, and installing a second framework over a working one is worse.
+**Otherwise gather markers. Every marker below is EVIDENCE for the question you ask — never a command to run blind.** A marker names the ecosystem and the command to OFFER; it does not prove the command works. Never execute a candidate to "check" it: probing a runner the project never had fails loudly and teaches nothing.
 
 \`\`\`bash
 setopt +o nomatch 2>/dev/null || true  # zsh compat
-# Definitive ecosystem markers (presence = ecosystem, NOT a command to run)
+# Ecosystem markers
 [ -f manage.py ] && echo "RUNTIME:python FRAMEWORK:django MARKER:manage.py"
 { [ -f pyproject.toml ] || [ -f pytest.ini ] || [ -f tox.ini ] || [ -f setup.cfg ] || [ -f requirements.txt ]; } && echo "RUNTIME:python"
 { [ -f Gemfile ] || [ -f Rakefile ] || [ -f .rspec ]; } && echo "RUNTIME:ruby"
 [ -f package.json ] && echo "RUNTIME:node"
 [ -f go.mod ] && echo "RUNTIME:go"
 [ -f Cargo.toml ] && echo "RUNTIME:rust"
+[ -f pubspec.yaml ] && echo "RUNTIME:dart"
 [ -f composer.json ] && echo "RUNTIME:php"
 [ -f mix.exs ] && echo "RUNTIME:elixir"
 [ -f pom.xml ] && echo "RUNTIME:jvm BUILD:maven"
@@ -26,14 +27,14 @@ setopt +o nomatch 2>/dev/null || true  # zsh compat
 # Detect sub-frameworks
 [ -f Gemfile ] && grep -q "rails" Gemfile 2>/dev/null && echo "FRAMEWORK:rails"
 [ -f package.json ] && grep -q '"next"' package.json 2>/dev/null && echo "FRAMEWORK:nextjs"
-# Existing test path — config files, declared scripts, AND test FILES.
-# A project with real tests and no config file is the common miss.
-ls jest.config.* vitest.config.* playwright.config.* .rspec pytest.ini tox.ini phpunit.xml* 2>/dev/null
+grep -qsE '^ +sdk: *.?flutter' pubspec.yaml && echo "FRAMEWORK:flutter"
+# Test evidence: config files, declared scripts, AND test FILES (tested projects often lack a config)
+ls jest.config.* vitest.config.* playwright.config.* .rspec pytest.ini tox.ini phpunit.xml* dart_test.yaml 2>/dev/null
 [ -f package.json ] && grep -q '"test"[[:space:]]*:' package.json && echo "SCRIPT:package.json test"
 [ -f Makefile ] && grep -qE '^(test|check):' Makefile && echo "TARGET:make test"
 [ -f pyproject.toml ] && grep -q "pytest" pyproject.toml && echo "CONFIG:pyproject pytest"
-git ls-files | grep -cE '(^|/)(tests?|spec|__tests__)/|(^|/)tests?\\.py$|(^|/)test_[^/]+\\.py$|_test\\.(go|py|rb|ts|js|exs)$|\\.(test|spec)\\.[jt]sx?$|_spec\\.rb$|Test\\.(java|kt)$' | sed 's/^/TESTFILES:/'
-# Rust keeps unit tests inside src/, so file names alone miss them
+git ls-files | grep -cE '(^|/)(tests?|spec|__tests__)/|(^|/)tests?\\.py$|(^|/)test_[^/]+\\.py$|_test\\.(go|py|rb|ts|js|exs|dart)$|\\.(test|spec)\\.[jt]sx?$|_spec\\.rb$|Test\\.(java|kt)$' | sed 's/^/TESTFILES:/'
+# Rust unit tests live in src/; file names alone miss them
 [ -f Cargo.toml ] && git grep -lF '#[test]' -- 'src' >/dev/null 2>&1 && echo "TESTS:rust in-source"
 # Check opt-out marker
 [ -f .gstack/no-test-bootstrap ] && echo "BOOTSTRAP_DECLINED"
@@ -47,6 +48,7 @@ Map the markers to the command you will OFFER — never to one you run on a gues
 | \`pytest.ini\` / \`tox.ini\` / pytest in \`pyproject.toml\` / \`test_*.py\` | Python | \`pytest\` |
 | \`go.mod\` (+ any \`*_test.go\`) | Go | \`go test ./...\` |
 | \`Cargo.toml\` | Rust | \`cargo test\` |
+| \`pubspec.yaml\` | Dart / Flutter | \`flutter test\` (FRAMEWORK:flutter) or \`dart test\`; \`fvm\` prefix if \`.fvmrc\` |
 | \`pom.xml\` | JVM (Maven) | \`mvn test\` |
 | \`build.gradle\` / \`build.gradle.kts\` | JVM (Gradle) | \`./gradlew test\` |
 | \`Gemfile\` / \`Rakefile\` / \`.rspec\` | Ruby | \`bundle exec rspec\`, \`bin/rails test\`, or \`rake test\` |
@@ -55,11 +57,11 @@ Map the markers to the command you will OFFER — never to one you run on a gues
 | \`package.json\` with a \`test\` script | Node | that script, run with the package manager the lockfile names |
 | \`Makefile\` with a \`test:\` target | any | \`make test\` |
 
-**If ANY existing-test evidence appears** (a config file, a declared test script or make target, a nonzero \`TESTFILES:\` count, or \`TESTS:rust in-source\`): the project has tests. **Do NOT bootstrap.** Print "Existing tests detected: {the evidence}." Then get the command the same way Step 5 does — CLAUDE.md/TESTING.md if documented, otherwise AskUserQuestion offering the candidates from the table above plus "Other", and persist the answer to CLAUDE.md's \`## Testing\` section so it is never asked again. When the ecosystem ships a runner (Django, Go, Rust, Elixir, Maven/Gradle), that runner is the candidate — never install a second framework beside a working one.
+**If ANY existing-test evidence appears** (a config file, a declared test script or make target, a nonzero \`TESTFILES:\` count, or \`TESTS:rust in-source\`): the project has tests. **Do NOT bootstrap.** Print "Existing tests detected: {the evidence}." Then get the command the same way Step 5 does — CLAUDE.md/TESTING.md if documented, otherwise AskUserQuestion offering the candidates from the table above plus "Other", and persist the answer to CLAUDE.md's \`## Testing\` section so it is never asked again. When the ecosystem ships a runner (Django, Go, Rust, Dart, Elixir, Maven/Gradle), that runner is the candidate — never install a second framework beside a working one.
 Read 2-3 existing test files to learn conventions (naming, imports, assertion style, setup patterns).
 Store conventions as prose context for use in ${ctx.skillName === 'ship' ? 'Step 7' : 'Phase 8e.5 or Step 7'}. **Skip the rest of bootstrap.**
 
-Absent config files and absent \`tests/\` directories are NOT evidence of "no tests": Django keeps tests in \`<app>/tests.py\`, Go in \`*_test.go\` beside the source, Rust in \`#[test]\` blocks inside \`src/\`. A green \`python manage.py test\` with no \`pytest.ini\` is a tested project, not a bootstrap candidate.
+Absent config files and absent \`tests/\` directories are NOT evidence of "no tests": Django keeps tests in \`<app>/tests.py\`, Go in \`*_test.go\` beside the source, Rust in \`#[test]\` blocks inside \`src/\`.
 
 ${ctx.skillName === 'ship'
   ? '**If BOOTSTRAP_DECLINED** appears:\n- Step 5\'s explicit Add tests choice overrides that marker for this invocation only: continue to runtime detection and B2–B3, including framework approval.\n- Otherwise print "Test bootstrap previously declined — skipping" and **skip the rest of bootstrap**.'
@@ -99,6 +101,7 @@ If Aside is not installed or not running (\`command -v aside\` prints nothing, o
 | Go | stdlib testing + testify | stdlib only |
 | JVM (Maven/Gradle) | JUnit 5 + AssertJ | JUnit 5 only |
 | Rust | cargo test (built-in) + mockall | — |
+| Dart | test / flutter_test + mocktail | mockito |
 | PHP | phpunit + mockery | pest |
 | Elixir | ExUnit (built-in) + ex_machina | — |
 
@@ -269,20 +272,21 @@ Before analyzing coverage, detect the project's test framework:
 
 \`\`\`bash
 setopt +o nomatch 2>/dev/null || true  # zsh compat
-# Detect project runtime (markers are evidence, not commands to run blind)
+# Runtime markers: evidence, not commands to run
 [ -f manage.py ] && echo "RUNTIME:python FRAMEWORK:django"
 { [ -f pyproject.toml ] || [ -f pytest.ini ] || [ -f tox.ini ] || [ -f setup.cfg ] || [ -f requirements.txt ]; } && echo "RUNTIME:python"
 { [ -f Gemfile ] || [ -f Rakefile ] || [ -f .rspec ]; } && echo "RUNTIME:ruby"
 [ -f package.json ] && echo "RUNTIME:node"
 [ -f go.mod ] && echo "RUNTIME:go"
 [ -f Cargo.toml ] && echo "RUNTIME:rust"
+[ -f pubspec.yaml ] && echo "RUNTIME:dart"
 [ -f pom.xml ] && echo "RUNTIME:jvm BUILD:maven"
 { [ -f build.gradle ] || [ -f build.gradle.kts ]; } && echo "RUNTIME:jvm BUILD:gradle"
-# Check for existing test infrastructure — config files, scripts, AND test files
-ls jest.config.* vitest.config.* playwright.config.* cypress.config.* .rspec pytest.ini tox.ini phpunit.xml 2>/dev/null
+# Test infra: configs, scripts, test files
+ls jest.config.* vitest.config.* playwright.config.* cypress.config.* .rspec pytest.ini tox.ini phpunit.xml dart_test.yaml 2>/dev/null
 [ -f package.json ] && grep -q '"test"[[:space:]]*:' package.json && echo "SCRIPT:package.json test"
 [ -f Makefile ] && grep -qE '^(test|check):' Makefile && echo "TARGET:make test"
-git ls-files | grep -cE '(^|/)(tests?|spec|__tests__)/|(^|/)tests?\\.py$|(^|/)test_[^/]+\\.py$|_test\\.(go|py|rb|ts|js|exs)$|\\.(test|spec)\\.[jt]sx?$|_spec\\.rb$|Test\\.(java|kt)$' | sed 's/^/TESTFILES:/'
+git ls-files | grep -cE '(^|/)(tests?|spec|__tests__)/|(^|/)tests?\\.py$|(^|/)test_[^/]+\\.py$|_test\\.(go|py|rb|ts|js|exs|dart)$|\\.(test|spec)\\.[jt]sx?$|_spec\\.rb$|Test\\.(java|kt)$' | sed 's/^/TESTFILES:/'
 \`\`\`
 
 3. **If no framework detected:**${mode === 'ship' ? ' use the bootstrap decision already made in Step 4; report diagram-only coverage if setup was declined. Do not restart bootstrap from this audit.' : ' State that the framework is unknown; continue the diagram and planned assertions. If proposing a new framework, settle that choice through Decision procedure in Test step 5. Reuse an exact prior approval; with no selection proposed, ask no framework question. Do not install a framework or write the proposed tests during this review.'}`);
diff --git a/ship/sections/adversarial.md b/ship/sections/adversarial.md
index 914818c5e..13459f3f2 100644
--- a/ship/sections/adversarial.md
+++ b/ship/sections/adversarial.md
@@ -8,9 +8,7 @@ Every diff gets the Claude adversarial pass. Add Codex when its preflight is rea
 
 ```bash
 DIFF_BASE=$(git merge-base origin/<base> HEAD)
-DIFF_INS=$(git diff "$DIFF_BASE" --stat | tail -1 | grep -oE '[0-9]+ insertion' | grep -oE '[0-9]+' || echo "0")
-DIFF_DEL=$(git diff "$DIFF_BASE" --stat | tail -1 | grep -oE '[0-9]+ deletion' | grep -oE '[0-9]+' || echo "0")
-DIFF_TOTAL=$((DIFF_INS + DIFF_DEL))
+DIFF_TOTAL=$(git diff "$DIFF_BASE" --numstat | awk '{n+=$1+$2} END {print n+0}')
 echo "DIFF_SIZE: $DIFF_TOTAL"
 ```
 
diff --git a/ship/sections/review-army.md b/ship/sections/review-army.md
index 8a35d0554..348458c08 100644
--- a/ship/sections/review-army.md
+++ b/ship/sections/review-army.md
@@ -276,6 +276,7 @@ STACK=""
 [ -f requirements.txt ] || [ -f pyproject.toml ] && STACK="${STACK}python "
 [ -f go.mod ] && STACK="${STACK}go "
 [ -f Cargo.toml ] && STACK="${STACK}rust "
+[ -f pubspec.yaml ] && STACK="${STACK}dart "
 echo "STACK: ${STACK:-unknown}"
 DIFF_BASE=$(git merge-base origin/<base> HEAD)
 DIFF_LINES=$(git diff "$DIFF_BASE" --numstat | awk '{n+=$1+$2} END {print n+0}')
@@ -287,6 +288,7 @@ TEST_FW=""
 { [ -f spec/spec_helper.rb ] || [ -f .rspec ]; } && TEST_FW="rspec"
 { [ -f pytest.ini ] || [ -f conftest.py ]; } && TEST_FW="pytest"
 [ -f go.mod ] && TEST_FW="go-test"
+[ -f pubspec.yaml ] && TEST_FW="dart-test" && grep -qsE '^ +sdk: *.?flutter' pubspec.yaml && TEST_FW="flutter-test"
 echo "TEST_FW: ${TEST_FW:-unknown}"
 ```
 
diff --git a/ship/sections/test-coverage.md b/ship/sections/test-coverage.md
index ef8859a58..1d4dfb904 100644
--- a/ship/sections/test-coverage.md
+++ b/ship/sections/test-coverage.md
@@ -48,20 +48,21 @@ Before analyzing coverage, detect the project's test framework:
 
 ```bash
 setopt +o nomatch 2>/dev/null || true  # zsh compat
-# Detect project runtime (markers are evidence, not commands to run blind)
+# Runtime markers: evidence, not commands to run
 [ -f manage.py ] && echo "RUNTIME:python FRAMEWORK:django"
 { [ -f pyproject.toml ] || [ -f pytest.ini ] || [ -f tox.ini ] || [ -f setup.cfg ] || [ -f requirements.txt ]; } && echo "RUNTIME:python"
 { [ -f Gemfile ] || [ -f Rakefile ] || [ -f .rspec ]; } && echo "RUNTIME:ruby"
 [ -f package.json ] && echo "RUNTIME:node"
 [ -f go.mod ] && echo "RUNTIME:go"
 [ -f Cargo.toml ] && echo "RUNTIME:rust"
+[ -f pubspec.yaml ] && echo "RUNTIME:dart"
 [ -f pom.xml ] && echo "RUNTIME:jvm BUILD:maven"
 { [ -f build.gradle ] || [ -f build.gradle.kts ]; } && echo "RUNTIME:jvm BUILD:gradle"
-# Check for existing test infrastructure — config files, scripts, AND test files
-ls jest.config.* vitest.config.* playwright.config.* cypress.config.* .rspec pytest.ini tox.ini phpunit.xml 2>/dev/null
+# Test infra: configs, scripts, test files
+ls jest.config.* vitest.config.* playwright.config.* cypress.config.* .rspec pytest.ini tox.ini phpunit.xml dart_test.yaml 2>/dev/null
 [ -f package.json ] && grep -q '"test"[[:space:]]*:' package.json && echo "SCRIPT:package.json test"
 [ -f Makefile ] && grep -qE '^(test|check):' Makefile && echo "TARGET:make test"
-git ls-files | grep -cE '(^|/)(tests?|spec|__tests__)/|(^|/)tests?\.py$|(^|/)test_[^/]+\.py$|_test\.(go|py|rb|ts|js|exs)$|\.(test|spec)\.[jt]sx?$|_spec\.rb$|Test\.(java|kt)$' | sed 's/^/TESTFILES:/'
+git ls-files | grep -cE '(^|/)(tests?|spec|__tests__)/|(^|/)tests?\.py$|(^|/)test_[^/]+\.py$|_test\.(go|py|rb|ts|js|exs|dart)$|\.(test|spec)\.[jt]sx?$|_spec\.rb$|Test\.(java|kt)$' | sed 's/^/TESTFILES:/'
 ```
 
 3. **If no framework detected:** use the bootstrap decision already made in Step 4; report diagram-only coverage if setup was declined. Do not restart bootstrap from this audit.
diff --git a/ship/sections/tests.md b/ship/sections/tests.md
index 14a488649..280834f6d 100644
--- a/ship/sections/tests.md
+++ b/ship/sections/tests.md
@@ -6,17 +6,18 @@
 
 **Read the project's CLAUDE.md (and TESTING.md if present) FIRST.** If it documents a test command, the project already told you: no detection, no bootstrap. Skip the rest of bootstrap and use that command in Step 5.
 
-**Otherwise gather markers. Every marker below is EVIDENCE for the question you ask — never a command to run blind.** A marker tells you which ecosystem you're in and which command to OFFER. It does not tell you the command works. Do not execute a candidate test command to "check" it: a probe on a project that never had that runner fails loudly and teaches you nothing, and installing a second framework over a working one is worse.
+**Otherwise gather markers. Every marker below is EVIDENCE for the question you ask — never a command to run blind.** A marker names the ecosystem and the command to OFFER; it does not prove the command works. Never execute a candidate to "check" it: probing a runner the project never had fails loudly and teaches nothing.
 
 ```bash
 setopt +o nomatch 2>/dev/null || true  # zsh compat
-# Definitive ecosystem markers (presence = ecosystem, NOT a command to run)
+# Ecosystem markers
 [ -f manage.py ] && echo "RUNTIME:python FRAMEWORK:django MARKER:manage.py"
 { [ -f pyproject.toml ] || [ -f pytest.ini ] || [ -f tox.ini ] || [ -f setup.cfg ] || [ -f requirements.txt ]; } && echo "RUNTIME:python"
 { [ -f Gemfile ] || [ -f Rakefile ] || [ -f .rspec ]; } && echo "RUNTIME:ruby"
 [ -f package.json ] && echo "RUNTIME:node"
 [ -f go.mod ] && echo "RUNTIME:go"
 [ -f Cargo.toml ] && echo "RUNTIME:rust"
+[ -f pubspec.yaml ] && echo "RUNTIME:dart"
 [ -f composer.json ] && echo "RUNTIME:php"
 [ -f mix.exs ] && echo "RUNTIME:elixir"
 [ -f pom.xml ] && echo "RUNTIME:jvm BUILD:maven"
@@ -24,14 +25,14 @@ setopt +o nomatch 2>/dev/null || true  # zsh compat
 # Detect sub-frameworks
 [ -f Gemfile ] && grep -q "rails" Gemfile 2>/dev/null && echo "FRAMEWORK:rails"
 [ -f package.json ] && grep -q '"next"' package.json 2>/dev/null && echo "FRAMEWORK:nextjs"
-# Existing test path — config files, declared scripts, AND test FILES.
-# A project with real tests and no config file is the common miss.
-ls jest.config.* vitest.config.* playwright.config.* .rspec pytest.ini tox.ini phpunit.xml* 2>/dev/null
+grep -qsE '^ +sdk: *.?flutter' pubspec.yaml && echo "FRAMEWORK:flutter"
+# Test evidence: config files, declared scripts, AND test FILES (tested projects often lack a config)
+ls jest.config.* vitest.config.* playwright.config.* .rspec pytest.ini tox.ini phpunit.xml* dart_test.yaml 2>/dev/null
 [ -f package.json ] && grep -q '"test"[[:space:]]*:' package.json && echo "SCRIPT:package.json test"
 [ -f Makefile ] && grep -qE '^(test|check):' Makefile && echo "TARGET:make test"
 [ -f pyproject.toml ] && grep -q "pytest" pyproject.toml && echo "CONFIG:pyproject pytest"
-git ls-files | grep -cE '(^|/)(tests?|spec|__tests__)/|(^|/)tests?\.py$|(^|/)test_[^/]+\.py$|_test\.(go|py|rb|ts|js|exs)$|\.(test|spec)\.[jt]sx?$|_spec\.rb$|Test\.(java|kt)$' | sed 's/^/TESTFILES:/'
-# Rust keeps unit tests inside src/, so file names alone miss them
+git ls-files | grep -cE '(^|/)(tests?|spec|__tests__)/|(^|/)tests?\.py$|(^|/)test_[^/]+\.py$|_test\.(go|py|rb|ts|js|exs|dart)$|\.(test|spec)\.[jt]sx?$|_spec\.rb$|Test\.(java|kt)$' | sed 's/^/TESTFILES:/'
+# Rust unit tests live in src/; file names alone miss them
 [ -f Cargo.toml ] && git grep -lF '#[test]' -- 'src' >/dev/null 2>&1 && echo "TESTS:rust in-source"
 # Check opt-out marker
 [ -f .gstack/no-test-bootstrap ] && echo "BOOTSTRAP_DECLINED"
@@ -45,6 +46,7 @@ Map the markers to the command you will OFFER — never to one you run on a gues
 | `pytest.ini` / `tox.ini` / pytest in `pyproject.toml` / `test_*.py` | Python | `pytest` |
 | `go.mod` (+ any `*_test.go`) | Go | `go test ./...` |
 | `Cargo.toml` | Rust | `cargo test` |
+| `pubspec.yaml` | Dart / Flutter | `flutter test` (FRAMEWORK:flutter) or `dart test`; `fvm` prefix if `.fvmrc` |
 | `pom.xml` | JVM (Maven) | `mvn test` |
 | `build.gradle` / `build.gradle.kts` | JVM (Gradle) | `./gradlew test` |
 | `Gemfile` / `Rakefile` / `.rspec` | Ruby | `bundle exec rspec`, `bin/rails test`, or `rake test` |
@@ -53,11 +55,11 @@ Map the markers to the command you will OFFER — never to one you run on a gues
 | `package.json` with a `test` script | Node | that script, run with the package manager the lockfile names |
 | `Makefile` with a `test:` target | any | `make test` |
 
-**If ANY existing-test evidence appears** (a config file, a declared test script or make target, a nonzero `TESTFILES:` count, or `TESTS:rust in-source`): the project has tests. **Do NOT bootstrap.** Print "Existing tests detected: {the evidence}." Then get the command the same way Step 5 does — CLAUDE.md/TESTING.md if documented, otherwise AskUserQuestion offering the candidates from the table above plus "Other", and persist the answer to CLAUDE.md's `## Testing` section so it is never asked again. When the ecosystem ships a runner (Django, Go, Rust, Elixir, Maven/Gradle), that runner is the candidate — never install a second framework beside a working one.
+**If ANY existing-test evidence appears** (a config file, a declared test script or make target, a nonzero `TESTFILES:` count, or `TESTS:rust in-source`): the project has tests. **Do NOT bootstrap.** Print "Existing tests detected: {the evidence}." Then get the command the same way Step 5 does — CLAUDE.md/TESTING.md if documented, otherwise AskUserQuestion offering the candidates from the table above plus "Other", and persist the answer to CLAUDE.md's `## Testing` section so it is never asked again. When the ecosystem ships a runner (Django, Go, Rust, Dart, Elixir, Maven/Gradle), that runner is the candidate — never install a second framework beside a working one.
 Read 2-3 existing test files to learn conventions (naming, imports, assertion style, setup patterns).
 Store conventions as prose context for use in Step 7. **Skip the rest of bootstrap.**
 
-Absent config files and absent `tests/` directories are NOT evidence of "no tests": Django keeps tests in `<app>/tests.py`, Go in `*_test.go` beside the source, Rust in `#[test]` blocks inside `src/`. A green `python manage.py test` with no `pytest.ini` is a tested project, not a bootstrap candidate.
+Absent config files and absent `tests/` directories are NOT evidence of "no tests": Django keeps tests in `<app>/tests.py`, Go in `*_test.go` beside the source, Rust in `#[test]` blocks inside `src/`.
 
 **If BOOTSTRAP_DECLINED** appears:
 - Step 5's explicit Add tests choice overrides that marker for this invocation only: continue to runtime detection and B2–B3, including framework approval.
@@ -103,6 +105,7 @@ If Aside is not installed or not running (`command -v aside` prints nothing, or
 | Go | stdlib testing + testify | stdlib only |
 | JVM (Maven/Gradle) | JUnit 5 + AssertJ | JUnit 5 only |
 | Rust | cargo test (built-in) + mockall | — |
+| Dart | test / flutter_test + mocktail | mockito |
 | PHP | phpunit + mockery | pest |
 | Elixir | ExUnit (built-in) + ex_machina | — |
 
diff --git a/test/diff-scope.test.ts b/test/diff-scope.test.ts
index 6b4104451..b5bc4fd10 100644
--- a/test/diff-scope.test.ts
+++ b/test/diff-scope.test.ts
@@ -87,6 +87,19 @@ describe('gstack-diff-scope', () => {
     }
   });
 
+  // A Dart change matched no category but its test file, so a Flutter widget PR
+  // set SCOPE_TESTS alone and skipped the design, performance and security passes.
+  test('detects Dart as both frontend and backend; pubspec.lock is config', () => {
+    const scope = runScope(createRepo(['lib/theme.dart', 'lib/widgets/drawer.dart', 'test/drawer_test.dart']));
+    expect(scope.SCOPE_FRONTEND).toBe('true');
+    expect(scope.SCOPE_BACKEND).toBe('true');
+    expect(scope.SCOPE_TESTS).toBe('true');
+    expect(runScope(createRepo(['pubspec.lock'])).SCOPE_CONFIG).toBe('true');
+    // Value: protects=a workspace package's pubspec.lock still reads as config; fails_when=the */pubspec.lock arm is dropped;
+    //   why_new=only the root lock was checked; seam=none; no_claim=none beyond protects
+    expect(runScope(createRepo(['packages/cache/pubspec.lock'])).SCOPE_CONFIG).toBe('true');
+  });
+
   test('detects test files', () => {
     const dir = createRepo(['test/app.test.ts']);
     const scope = runScope(dir);
diff --git a/test/fixtures/skill-md-size-allowlist.json b/test/fixtures/skill-md-size-allowlist.json
index 9482bb22a..9083336de 100644
--- a/test/fixtures/skill-md-size-allowlist.json
+++ b/test/fixtures/skill-md-size-allowlist.json
@@ -4,92 +4,92 @@
   "pins": {
     "agy/gstack-autoplan": 130504,
     "agy/gstack-design-consultation": 108184,
-    "agy/gstack-design-review": 143533,
+    "agy/gstack-design-review": 143528,
     "agy/gstack-land-and-deploy": 116611,
     "agy/gstack-plan-design-review": 140013,
     "agy/gstack-plan-devex-review": 135760,
-    "agy/gstack-plan-eng-review": 152702,
-    "agy/gstack-review": 124398,
-    "claude/design-review": 136536,
+    "agy/gstack-plan-eng-review": 152701,
+    "agy/gstack-review": 124218,
+    "claude/design-review": 136531,
     "codex/gstack-autoplan": 130628,
     "codex/gstack-design-consultation": 109452,
-    "codex/gstack-design-review": 145033,
+    "codex/gstack-design-review": 145028,
     "codex/gstack-land-and-deploy": 121188,
     "codex/gstack-office-hours": 102339,
     "codex/gstack-plan-design-review": 142466,
     "codex/gstack-plan-devex-review": 138649,
-    "codex/gstack-plan-eng-review": 155248,
-    "codex/gstack-review": 125302,
+    "codex/gstack-plan-eng-review": 155247,
+    "codex/gstack-review": 125122,
     "copilot/gstack-autoplan": 131637,
     "copilot/gstack-codex": 100235,
     "copilot/gstack-design-consultation": 109536,
-    "copilot/gstack-design-review": 144838,
+    "copilot/gstack-design-review": 144833,
     "copilot/gstack-land-and-deploy": 117881,
     "copilot/gstack-office-hours": 100495,
     "copilot/gstack-plan-design-review": 140884,
     "copilot/gstack-plan-devex-review": 136912,
-    "copilot/gstack-plan-eng-review": 153427,
-    "copilot/gstack-review": 125669,
+    "copilot/gstack-plan-eng-review": 153426,
+    "copilot/gstack-review": 125489,
     "cursor/gstack-autoplan": 129278,
     "cursor/gstack-design-consultation": 107222,
-    "cursor/gstack-design-review": 142512,
+    "cursor/gstack-design-review": 142507,
     "cursor/gstack-land-and-deploy": 115550,
     "cursor/gstack-plan-design-review": 138968,
     "cursor/gstack-plan-devex-review": 134591,
-    "cursor/gstack-plan-eng-review": 151556,
-    "cursor/gstack-review": 140769,
+    "cursor/gstack-plan-eng-review": 151555,
+    "cursor/gstack-review": 140750,
     "factory/gstack-autoplan": 131562,
     "factory/gstack-codex": 100655,
     "factory/gstack-design-consultation": 108670,
-    "factory/gstack-design-review": 144302,
+    "factory/gstack-design-review": 144297,
     "factory/gstack-land-and-deploy": 119733,
     "factory/gstack-office-hours": 101374,
     "factory/gstack-plan-design-review": 141749,
     "factory/gstack-plan-devex-review": 137960,
-    "factory/gstack-plan-eng-review": 154670,
-    "factory/gstack-review": 144548,
+    "factory/gstack-plan-eng-review": 154669,
+    "factory/gstack-review": 144529,
     "gbrain/gstack-autoplan": 129815,
-    "gbrain/gstack-design-review": 132847,
+    "gbrain/gstack-design-review": 132842,
     "gbrain/gstack-land-and-deploy": 116072,
     "gbrain/gstack-plan-design-review": 127855,
     "gbrain/gstack-plan-devex-review": 115129,
-    "gbrain/gstack-plan-eng-review": 134288,
+    "gbrain/gstack-plan-eng-review": 134287,
     "hermes/gstack-autoplan": 129905,
-    "hermes/gstack-design-review": 132954,
+    "hermes/gstack-design-review": 132949,
     "hermes/gstack-land-and-deploy": 116174,
     "hermes/gstack-plan-design-review": 127964,
     "hermes/gstack-plan-devex-review": 115215,
-    "hermes/gstack-plan-eng-review": 134373,
+    "hermes/gstack-plan-eng-review": 134372,
     "kiro/gstack-autoplan": 129040,
     "kiro/gstack-design-consultation": 107064,
-    "kiro/gstack-design-review": 142326,
+    "kiro/gstack-design-review": 142321,
     "kiro/gstack-land-and-deploy": 115440,
     "kiro/gstack-plan-design-review": 138808,
     "kiro/gstack-plan-devex-review": 134431,
-    "kiro/gstack-plan-eng-review": 151406,
-    "kiro/gstack-review": 140581,
+    "kiro/gstack-plan-eng-review": 151405,
+    "kiro/gstack-review": 140562,
     "openclaw/gstack-autoplan": 129520,
-    "openclaw/gstack-design-review": 131652,
+    "openclaw/gstack-design-review": 131647,
     "openclaw/gstack-land-and-deploy": 115660,
     "openclaw/gstack-plan-design-review": 126706,
     "openclaw/gstack-plan-devex-review": 113968,
-    "openclaw/gstack-plan-eng-review": 132685,
+    "openclaw/gstack-plan-eng-review": 132684,
     "opencode/gstack-autoplan": 131640,
     "opencode/gstack-design-consultation": 109357,
-    "opencode/gstack-design-review": 144710,
+    "opencode/gstack-design-review": 144705,
     "opencode/gstack-land-and-deploy": 117658,
     "opencode/gstack-office-hours": 100329,
     "opencode/gstack-plan-design-review": 140738,
     "opencode/gstack-plan-devex-review": 136812,
-    "opencode/gstack-plan-eng-review": 153308,
-    "opencode/gstack-review": 143004,
+    "opencode/gstack-plan-eng-review": 153307,
+    "opencode/gstack-review": 142985,
     "slate/gstack-autoplan": 129159,
     "slate/gstack-design-consultation": 107143,
-    "slate/gstack-design-review": 142419,
+    "slate/gstack-design-review": 142414,
     "slate/gstack-land-and-deploy": 115495,
     "slate/gstack-plan-design-review": 138888,
     "slate/gstack-plan-devex-review": 134511,
-    "slate/gstack-plan-eng-review": 151481,
-    "slate/gstack-review": 140675
+    "slate/gstack-plan-eng-review": 151480,
+    "slate/gstack-review": 140656
   }
 }
diff --git a/test/frontend-scope.test.ts b/test/frontend-scope.test.ts
index 4cfca65fd..24977a7ce 100644
--- a/test/frontend-scope.test.ts
+++ b/test/frontend-scope.test.ts
@@ -44,6 +44,9 @@ const SAMPLES: Array<[string, boolean]> = [
   ['components.md', false],
   ['public/Index.HTML', false], // bash globs are case-sensitive; the mirror must agree
   ['src/App.TSX', false],
+  ['lib/widgets/bbtm_drawer/view/bbtm_drawer.dart', true],
+  ['packages/cache/lib/cache.dart', true],
+  ['test/ui/drawer_widget_test.dart', true],
 ];
 
 describe('isFrontendPath', () => {
@@ -86,5 +89,5 @@ describe.skipIf(!POSIX)('parity with bin/gstack-diff-scope', () => {
     } finally {
       fs.rmSync(dir, { recursive: true, force: true });
     }
-  });
+  }, 30_000); // one git commit + one bash run per sample: past bun's 5 s default
 });
diff --git a/test/gstack-design-detect.test.ts b/test/gstack-design-detect.test.ts
index 59572e841..6349ec7d9 100644
--- a/test/gstack-design-detect.test.ts
+++ b/test/gstack-design-detect.test.ts
@@ -29,7 +29,7 @@ let IMPECCABLE_HOME: string;
 
 function git(cwd: string, ...args: string[]) {
   const r = spawnSync('git', args, { cwd, encoding: 'utf-8', timeout: 30_000 });
-  if (r.status !== 0) throw new Error(`git ${args.join(' ')} failed: ${r.stderr}`);
+  if (r.status !== 0) throw new Error(`git ${args.join(' ')} failed: status=${r.status} signal=${r.signal} error=${r.error?.message ?? ''} stderr=${r.stderr ?? ''}`);
   return r.stdout.trim();
 }
 
@@ -907,6 +907,10 @@ describe('scan', () => {
     fs.mkdirSync(path.join(REPO, 'styles'), { recursive: true });
     fs.writeFileSync(path.join(REPO, 'styles', 'new.css'), 'body { color: red }\n'); // untracked frontend
     fs.writeFileSync(path.join(REPO, 'notes.md'), 'x\n'); // untracked non-frontend
+    // Value: protects=a .dart file (frontend scope since lib/frontend-scope.ts counts it) never reaches the web-source engine;
+    //   fails_when=the .dart exclusion in resolveTargets is dropped; why_new=no --changed case had a Dart file; seam=none;
+    //   no_claim=the real impeccable engine (fake engine logs argv)
+    fs.writeFileSync(path.join(REPO, 'drawer.dart'), 'class Drawer {}\n'); // untracked Dart: frontend scope, not a scan target
     const log = path.join(SANDBOX, 'argv4.log');
     fs.rmSync(log, { force: true });
     try {
@@ -918,6 +922,7 @@ describe('scan', () => {
     } finally {
       fs.rmSync(path.join(REPO, 'styles'), { recursive: true, force: true });
       fs.rmSync(path.join(REPO, 'notes.md'), { force: true });
+      fs.rmSync(path.join(REPO, 'drawer.dart'), { force: true });
       git(REPO, 'checkout', '-q', 'main');
       git(REPO, 'branch', '-q', '-D', 'feature');
     }
diff --git a/test/outside-voice-preflight.test.ts b/test/outside-voice-preflight.test.ts
index 0bf7fc93a..04ea85524 100644
--- a/test/outside-voice-preflight.test.ts
+++ b/test/outside-voice-preflight.test.ts
@@ -240,3 +240,31 @@ describe('outside reviewer runtime discovery in fresh shells', () => {
     expect(fs.existsSync(path.join(f.repo, 'NEVER'))).toBe(false);
   });
 });
+
+// Value: protects=the adversarial DIFF_SIZE sums insertions+deletions across files and ignores binary rows;
+//   fails_when=the numstat/awk sum reads the wrong field or a binary "-" row breaks it; why_new=no test ran the
+//   size block; seam=none; no_claim=the size thresholds that consume DIFF_SIZE
+test('adversarial DIFF_SIZE counts changed lines from numstat', () => {
+  const ctx: TemplateContext = { host: 'claude', skillName: 'ship', tmplPath: 'ship/SKILL.md.tmpl', paths: HOST_PATHS.claude };
+  const fence = generateAdversarialStep(ctx).match(/```bash\n(DIFF_BASE=[\s\S]*?)\n```/);
+  expect(fence).not.toBeNull();
+  const repo = fs.mkdtempSync(path.join(TEMP, 'diff-size-'));
+  const git = (...args: string[]) => {
+    const r = spawnSync('git', ['-c', 'user.email=t@t', '-c', 'user.name=t', ...args], { cwd: repo, encoding: 'utf8', timeout: 30_000 });
+    expect(r.status).toBe(0);
+  };
+  git('init', '-q', '-b', 'main');
+  fs.writeFileSync(path.join(repo, 'a.txt'), 'one\ntwo\n');
+  git('add', '-A');
+  git('commit', '-qm', 'base');
+  git('update-ref', 'refs/remotes/origin/main', 'HEAD');
+  git('checkout', '-q', '-b', 'feature');
+  fs.writeFileSync(path.join(repo, 'a.txt'), 'one\nTWO\n');            // 1 insertion + 1 deletion
+  fs.writeFileSync(path.join(repo, 'b.txt'), 'x\ny\nz\n');              // 3 insertions
+  fs.writeFileSync(path.join(repo, 'c.bin'), Buffer.from([0, 1, 2, 0])); // binary: "-\t-" in numstat
+  git('add', '-A');
+  git('commit', '-qm', 'change');
+  const r = spawnSync('bash', ['-c', fence![1].replaceAll('<base>', 'main')], { cwd: repo, encoding: 'utf8', timeout: 30_000 });
+  expect(r.stderr).toBe('');
+  expect(r.stdout.trim()).toBe('DIFF_SIZE: 5');
+});
diff --git a/test/ship-test-detection-markers.test.ts b/test/ship-test-detection-markers.test.ts
index e842642a4..c170b41ca 100644
--- a/test/ship-test-detection-markers.test.ts
+++ b/test/ship-test-detection-markers.test.ts
@@ -20,21 +20,23 @@ import * as fs from 'fs';
 import * as os from 'os';
 import * as path from 'path';
 
-import { generateTestBootstrap } from '../scripts/resolvers/testing';
+import { generateTestBootstrap, generateTestCoverageAuditShip } from '../scripts/resolvers/testing';
+import { generateReviewArmy } from '../scripts/resolvers/review-army';
+import { HOST_PATHS } from '../scripts/resolvers/types';
 
 const section = generateTestBootstrap({} as never);
 
 /** The detection block the skill tells the agent to run (first bash fence). */
-function detectionScript(): string {
-  const open = section.indexOf('```bash\n');
+function detectionScript(from: string = section): string {
+  const open = from.indexOf('```bash\n');
   expect(open).toBeGreaterThan(-1);
   const start = open + '```bash\n'.length;
-  const end = section.indexOf('```', start);
-  return section.slice(start, end);
+  const end = from.indexOf('```', start);
+  return from.slice(start, end);
 }
 
 /** Run the detection block in a throwaway git repo laid out by `files`. */
-function detect(files: Record<string, string>): string {
+function detect(files: Record<string, string>, script: string = detectionScript()): string {
   const dir = fs.mkdtempSync(path.join(os.tmpdir(), 'ship-detect-'));
   try {
     for (const [rel, body] of Object.entries(files)) {
@@ -42,15 +44,15 @@ function detect(files: Record<string, string>): string {
       fs.mkdirSync(path.dirname(abs), { recursive: true });
       fs.writeFileSync(abs, body);
     }
-    const script = path.join(dir, '.detect.sh');
-    fs.writeFileSync(script, detectionScript());
+    const scriptPath = path.join(dir, '.detect.sh');
+    fs.writeFileSync(scriptPath, script);
     const git = (...args: string[]) => execFileSync('git', args, { timeout: 30_000, cwd: dir });
     git('init', '-q', '.');
     git('add', '-A');
     git('-c', 'user.email=t@t', '-c', 'user.name=t', 'commit', '-qm', 'fixture');
     // The block's last line is a `[ -f marker ] && echo`, so a clean project
     // exits 1 by design — read stdout, don't trust the status.
-    return execFileSync('bash', [script], { timeout: 30_000, cwd: dir, encoding: 'utf-8' });
+    return execFileSync('bash', [scriptPath], { timeout: 30_000, cwd: dir, encoding: 'utf-8' });
   } catch (err: unknown) {
     const e = err as { stdout?: string };
     if (typeof e.stdout === 'string') return e.stdout;
@@ -93,6 +95,37 @@ describe('/ship Step 4 detection is multi-ecosystem', () => {
     expect(rust).toContain('TESTS:rust in-source');
   });
 
+  test('Dart and Flutter report their runtime, the Flutter SDK, and *_test.dart outside test/', () => {
+    const flutter = detect({
+      'pubspec.yaml': 'name: app\ndependencies:\n  flutter:\n    sdk: flutter\n',
+      'lib/src/theme_test.dart': 'void main() {}\n',
+    });
+    expect(flutter).toContain('RUNTIME:dart');
+    expect(flutter).toContain('FRAMEWORK:flutter');
+    expect(testFileCount(flutter)).toBe(1);
+
+    // A commented-out Flutter dependency is not Flutter.
+    const dart = detect({ 'pubspec.yaml': 'name: x\n#  flutter:\n#    sdk: flutter\n', 'lib/x.dart': 'int x = 1;\n' });
+    expect(dart).toContain('RUNTIME:dart');
+    expect(dart).not.toContain('FRAMEWORK:flutter');
+    expect(testFileCount(dart)).toBe(0);
+
+    // dart_test.yaml can move discovery off *_test.dart (paths/filename), so it is test evidence on its own.
+    const configured = detect({ 'pubspec.yaml': 'name: x\n', 'dart_test.yaml': 'paths: [checks]\n', 'checks/test_math.dart': 'void main() {}\n' });
+    expect(configured).toContain('dart_test.yaml');
+  });
+
+  // Value: protects=the Step 7 coverage audit sees a Dart project and its *_test.dart files, like bootstrap does;
+  //   fails_when=the coverage-audit block drops RUNTIME:dart or `dart` from its _test regex; why_new=only the
+  //   bootstrap block was run; seam=none; no_claim=none beyond protects
+  test('the Step 7 coverage-audit detection block agrees with bootstrap on Dart', () => {
+    const audit = generateTestCoverageAuditShip({ host: 'claude', skillName: 'ship', tmplPath: 'ship/SKILL.md.tmpl', paths: HOST_PATHS.claude } as never);
+    const block = audit.slice(audit.indexOf('Test Framework Detection'));
+    const out = detect({ 'pubspec.yaml': 'name: x\n', 'lib/src/theme_test.dart': 'void main() {}\n' }, detectionScript(block));
+    expect(out).toContain('RUNTIME:dart');
+    expect(testFileCount(out)).toBe(1);
+  });
+
   test('a genuinely untested project reports no test evidence', () => {
     const out = detect({ 'go.mod': 'module x\n', 'x.go': 'package x\n' });
     expect(out).toContain('RUNTIME:go');
@@ -103,7 +136,7 @@ describe('/ship Step 4 detection is multi-ecosystem', () => {
   test('every ecosystem marker maps to a command to OFFER, not to run blind', () => {
     expect(section).toContain('never a command to run blind');
     for (const marker of ['manage.py', 'go.mod', 'Cargo.toml', 'pom.xml',
-      'build.gradle', 'mix.exs', 'composer.json', 'Gemfile', 'pytest.ini']) {
+      'build.gradle', 'mix.exs', 'composer.json', 'Gemfile', 'pytest.ini', 'pubspec.yaml']) {
       expect(section).toContain(marker);
     }
     // The ask-and-persist contract, not a hardcoded project command.
@@ -111,3 +144,43 @@ describe('/ship Step 4 detection is multi-ecosystem', () => {
     expect(section).toContain('persist the answer to CLAUDE.md');
   });
 });
+
+// Value: protects=review-army STACK/TEST_FW name Dart and tell flutter_test from dart test; fails_when=the pubspec.yaml lines
+//   are dropped or the Flutter grep matches any `sdk:` (environment.sdk), a comment, or misses a quoted value; why_new=no free test runs the review-army
+//   detection lines; seam=none; no_claim=specialist selection from these values (only the emitted lines run)
+describe('review-army stack detection names Dart and Flutter', () => {
+  const block = generateReviewArmy({ host: 'claude', skillName: 'ship', tmplPath: 'ship/SKILL.md.tmpl', paths: HOST_PATHS.claude });
+  const lines = (from: string, to: string): string => {
+    const start = block.indexOf(from);
+    const end = block.indexOf(to, start);
+    expect(start).toBeGreaterThan(-1);
+    expect(end).toBeGreaterThan(start);
+    return block.slice(start, block.indexOf('\n', end));
+  };
+  const script = `${lines('STACK=""', 'echo "STACK:')}\n${lines('TEST_FW=""', 'echo "TEST_FW:')}\n`;
+
+  function stack(files: Record<string, string>): string {
+    const dir = fs.mkdtempSync(path.join(os.tmpdir(), 'review-army-stack-'));
+    try {
+      for (const [rel, body] of Object.entries(files)) fs.writeFileSync(path.join(dir, rel), body);
+      return execFileSync('bash', ['-c', script], { timeout: 30_000, cwd: dir, encoding: 'utf-8' });
+    } finally {
+      fs.rmSync(dir, { recursive: true, force: true });
+    }
+  }
+
+  test('Flutter app, pure Dart package, and a Dart SDK constraint that is not Flutter', () => {
+    // Quoted `sdk: "flutter"` is the same YAML value.
+    const flutter = stack({ 'pubspec.yaml': 'name: app\ndependencies:\n  flutter:\n    sdk: "flutter"\n' });
+    expect(flutter).toContain('STACK: dart');
+    expect(flutter).toContain('TEST_FW: flutter-test');
+
+    const dart = stack({ 'pubspec.yaml': 'name: x\nenvironment:\n  sdk: ">=3.0.0 <4.0.0"\n#    sdk: flutter\n' });
+    expect(dart).toContain('STACK: dart');
+    expect(dart).toContain('TEST_FW: dart-test');
+
+    const none = stack({ 'README.md': 'x\n' });
+    expect(none).toContain('STACK: unknown');
+    expect(none).toContain('TEST_FW: unknown');
+  });
+});