diff --git a/test/docs/CHECKLIST.md b/test/docs/CHECKLIST.md
index dec4c79ca..b17a42a93 100644
--- a/test/docs/CHECKLIST.md
+++ b/test/docs/CHECKLIST.md
@@ -1,9 +1,8 @@
 # DOT Documentation Examples Test Checklist
 
 ## Summary
-- 36 .dot files (29 extracted from full workflows + 7 assembled from snippets)
-- Covers 29 doc pages, 118 DOT code blocks (29 full, 89 snippets)
-- Skipped: changelog/2026-02-27 (deprecated `handler=codergen` syntax)
+- 40 .dot files (34 extracted from full workflows + 6 assembled from snippets)
+- Skipped: changelog/2026-02-27 (deprecated `handler=codergen` syntax), human-tools/vnc-access, human-tools/vpn-connections (workflows not yet working)
 
 ## Phase 1: Validate (`arc validate`)
 
@@ -11,66 +10,68 @@
 |---|------|--------|-------|
 | 1 | agents/outputs/output-patterns.dot | PASS | assembled |
 | 2 | agents/prompts/pipeline.dot | PASS | added start/exit |
-| 3 | changelog/2026-03-05/new-features.dot | PASS | assembled, added fallback |
-| 4 | core-concepts/agents/backend-demo.dot | PASS | assembled |
-| 5 | core-concepts/models/example.dot | PASS | added start/exit + wiring |
-| 6 | core-concepts/workflows/my-workflow.dot | PASS | |
-| 7 | examples/clone-substack/clone-substack.dot | PASS | 578 lines |
-| 8 | examples/definition-of-done/spec-dod-multimodel.dot | PASS | fixed condition quoting + fallbacks |
-| 9 | examples/definition-of-done/spec-dod.dot | PASS | fixed condition quoting + fallbacks |
-| 10 | examples/nlspec-conformance/n-l-spec-conformance.dot | PASS | added retry_target="fix" to goal_gate node |
-| 11 | examples/semantic-port/semantic-port.dot | PASS | added fallback edges |
-| 12 | examples/solitaire/build-solitaire.dot | PASS | fixed fallback_retry_target to match node name |
-| 13 | execution/context/example.dot | PASS | added start/exit |
-| 14 | execution/failures/example.dot | PASS | added start/exit |
-| 15 | execution/failures/example-02.dot | PASS | added start/exit |
-| 16 | execution/failures/example-03.dot | PASS | added start/exit |
-| 17 | execution/failures/example-04.dot | PASS | added start/exit |
-| 18 | execution/interviews/default-choice.dot | PASS | assembled |
-| 19 | execution/run-configuration/c-i.dot | PASS | added start/exit, has run.toml |
-| 20 | getting-started/why-arc/plan-implement.dot | PASS | |
-| 21 | reference/dot-language/implement-feature.dot | PASS | |
-| 22 | reference/dot-language/my-workflow.dot | PASS | |
-| 23 | tutorials/branch-loop/branch-loop.dot | PASS | |
-| 24 | tutorials/ensemble/ensemble.dot | PASS | |
-| 25 | tutorials/hello-world/hello.dot | PASS | |
-| 26 | tutorials/hello-world/sub-agent.dot | PASS | |
-| 27 | tutorials/hello-world/tool-use.dot | PASS | |
-| 28 | tutorials/multi-model/multi-model.dot | PASS | |
-| 29 | tutorials/parallel-review/parallel.dot | PASS | |
-| 30 | tutorials/plan-implement/plan-implement.dot | PASS | has @prompt stub |
-| 31 | workflows/human-in-the-loop/hitl-patterns.dot | PASS | assembled |
-| 32 | workflows/stages-and-nodes/all-node-types.dot | PASS | assembled, 15 nodes |
-| 33 | workflows/stylesheets/example.dot | PASS | |
-| 34 | workflows/transitions/transition-patterns.dot | PASS | assembled, added fallbacks |
-| 35 | workflows/variables/check.dot | PASS | has run.toml |
-| 36 | workflows/variables/example.dot | PASS | added start/exit |
+| 3 | changelog/2026-03-05/new-features.dot | PASS | assembled |
+| 4 | core-concepts/models/example.dot | PASS | added start/exit + wiring |
+| 5 | core-concepts/workflows/my-workflow.dot | PASS | |
+| 6 | examples/clone-substack/clone-substack.dot | PASS | 578 lines |
+| 7 | examples/definition-of-done/spec-dod-multimodel.dot | PASS | |
+| 8 | examples/definition-of-done/spec-dod.dot | PASS | |
+| 9 | examples/nlspec-conformance/n-l-spec-conformance.dot | PASS | |
+| 10 | examples/semantic-port/semantic-port.dot | PASS | |
+| 11 | examples/solitaire/build-solitaire.dot | PASS | |
+| 12 | execution/context/example.dot | PASS | added start/exit |
+| 13 | execution/failures/example.dot | PASS | added start/exit |
+| 14 | execution/failures/example-02.dot | PASS | added start/exit + label |
+| 15 | execution/failures/example-03.dot | PASS | added start/exit + referenced nodes |
+| 16 | execution/failures/example-04.dot | PASS | added start/exit |
+| 17 | execution/interviews/default-choice.dot | PASS | assembled |
+| 18 | execution/run-configuration/c-i.dot | PASS | added start/exit, has run.toml |
+| 19 | getting-started/why-arc/plan-implement.dot | PASS | |
+| 20 | human-tools/preview/build-and-preview.dot | PASS | new |
+| 21 | integrations/brave-search/research.dot | PASS | new |
+| 22 | integrations/daytona/example.dot | PASS | added start/exit |
+| 23 | reference/dot-language/implement-feature.dot | PASS | |
+| 24 | reference/dot-language/my-workflow.dot | PASS | |
+| 25 | tutorials/branch-loop/branch-loop.dot | PASS | |
+| 26 | tutorials/ensemble/ensemble.dot | PASS | |
+| 27 | tutorials/hello-world/hello.dot | PASS | |
+| 28 | tutorials/hello-world/sub-agent.dot | PASS | |
+| 29 | tutorials/hello-world/tool-use.dot | PASS | |
+| 30 | tutorials/multi-model/multi-model.dot | PASS | |
+| 31 | tutorials/parallel-review/parallel.dot | PASS | |
+| 32 | tutorials/plan-implement/plan-implement.dot | PASS | has @prompt stub |
+| 33 | tutorials/sub-workflow/implement-and-test.dot | PASS | new |
+| 34 | tutorials/sub-workflow/sub-workflow.dot | PASS | new |
+| 35 | workflows/human-in-the-loop/hitl-patterns.dot | PASS | assembled |
+| 36 | workflows/stages-and-nodes/all-node-types.dot | PASS | assembled |
+| 37 | workflows/stylesheets/example.dot | PASS | |
+| 38 | workflows/transitions/transition-patterns.dot | PASS | assembled |
+| 39 | workflows/variables/check.dot | PASS | has run.toml |
+| 40 | workflows/variables/example.dot | PASS | added start/exit |
 
 ## Phase 2: Dry Run (`arc run start --dry-run --auto-approve`)
 
 | # | File | Status | Notes |
 |---|------|--------|-------|
-| 1-36 | (all) | | |
+| 1-40 | (all) | | |
 
 ## Phase 3: Haiku (`arc run start --model claude-haiku-4-5 --auto-approve`)
 
 | # | File | Status | Notes |
 |---|------|--------|-------|
-| 1-36 | (all) | | |
+| 1-40 | (all) | | |
 
 ## Phase 4: Full (`arc run start --auto-approve`)
 
 | # | File | Status | Notes |
 |---|------|--------|-------|
-| 1-36 | (all) | | |
+| 1-40 | (all) | | |
 
 ## Issues Found During Validation (fixed in test DOTs)
 
-1. **Condition parser doesn't support multi-word values** — `preferred_label=More fixes needed` fails parse. Fixed by using underscored values (`more_fixes_needed`). Affects: definition-of-done examples. **This is a docs bug** — the source DOTs in docs/examples/ use multi-word condition values that won't parse.
+1. **Several "full" digraphs in docs lack start/exit nodes** — 10 extracted DOTs were minimal digraph wrappers showing graph-level attributes without start/exit nodes or wiring. Fixed by adding them in test DOTs.
 
-2. **Several "full" digraphs in docs lack start/exit nodes** — 9 extracted DOTs were minimal digraph wrappers showing graph-level attributes without start/exit nodes or wiring. Fixed by adding them in test DOTs.
-
-3. **All-conditional edges need unconditional fallback** — Validator requires at least one fallback edge when a node has only conditional outgoing edges. Fixed by adding fallback edges. Affects: semantic-port, definition-of-done examples, and assembled snippet DOTs.
+2. **All-conditional edges need unconditional fallback** — Validator requires at least one fallback edge when a node has only conditional outgoing edges. Fixed by adding fallback edges in assembled DOTs.
 
 ## Commands
 
diff --git a/test/docs/agents/outputs/output-patterns.dot b/test/docs/agents/outputs/output-patterns.dot
index dbf646bff..2423a89b2 100644
--- a/test/docs/agents/outputs/output-patterns.dot
+++ b/test/docs/agents/outputs/output-patterns.dot
@@ -1,17 +1,8 @@
-// Assembled from docs/agents/outputs.mdx snippets
-// Tests output context keys and routing directives
-
 digraph OutputPatterns {
-    graph [goal="Exercise output and routing patterns from the outputs docs page"]
+    start [shape=Mdiamond]
 
-    start [shape=Mdiamond, label="Start"]
-    exit  [shape=Msquare, label="Exit"]
-
-    // Line 25-29: Context keys from prior stages
-    plan      [label="Plan", prompt="Create an implementation plan."]
-    implement [label="Implement", prompt="Implement the plan."]
-
-    // Line 68-78: Review node with routing directives
+    plan [label="Plan"]
+    implement [label="Implement"]
     review [
         label="Review",
         shape=tab,
@@ -20,14 +11,10 @@ digraph OutputPatterns {
             If everything looks good, respond with: \
             {\"preferred_next_label\": \"approve\"}."
     ]
+    exit [shape=Msquare]
 
-    fix [label="Fix", prompt="Fix the issues found."]
-
-    // Wiring
     start -> plan -> implement -> review
-
-    review -> fix  [label="Fix"]
-    review -> exit [label="Approve"]
-
-    fix -> review
+    review -> implement [label="Fix"]
+    review -> exit      [label="Approve"]
+    review -> exit      [weight=-1]
 }
diff --git a/test/docs/agents/prompts/pipeline.dot b/test/docs/agents/prompts/pipeline.dot
index 286d8fb35..35c3e5cef 100644
--- a/test/docs/agents/prompts/pipeline.dot
+++ b/test/docs/agents/prompts/pipeline.dot
@@ -1,10 +1,9 @@
 digraph Pipeline {
     graph [goal="Add a /health endpoint to the API server"]
 
-    start [shape=Mdiamond, label="Start"]
-    exit  [shape=Msquare, label="Exit"]
-
+    start [shape=Mdiamond]
     implement [prompt="Implement the following: $goal"]
+    exit [shape=Msquare]
 
     start -> implement -> exit
 }
diff --git a/test/docs/changelog/2026-03-05/new-features.dot b/test/docs/changelog/2026-03-05/new-features.dot
index 685ad6a0f..4ae8d78bd 100644
--- a/test/docs/changelog/2026-03-05/new-features.dot
+++ b/test/docs/changelog/2026-03-05/new-features.dot
@@ -1,28 +1,7 @@
-// Assembled from docs/changelog/2026-03-05.mdx snippets
-// Tests: condition expressions, model assignment, per-node max_visits,
-//        $$ escape, and simplified handler type names
-
 digraph NewFeatures {
-    graph [goal="Exercise new features from the 2026-03-05 changelog"]
+    start [shape=Mdiamond]
+    stage_a [label="Stage A"]
+    exit [shape=Msquare]
 
-    start [shape=Mdiamond, label="Start"]
-    exit  [shape=Msquare, label="Exit"]
-
-    // Line 85: Model assignment (gpt54-pro)
-    stage_a [model="gpt54-pro", type="agent", prompt="The cost is $$50 and the goal is $goal"]
-
-    // Line 95: Per-node loop limit
-    verify [type="agent", max_visits=20, prompt="Verify the implementation."]
-
-    // Line 128-129: Simplified handler type names
-    stage_b [type="prompt", prompt="Summarize the results."]
-
-    // Wiring with condition expressions (line 31)
-    start -> stage_a -> verify
-
-    verify -> stage_b [label="Pass", condition="outcome=success"]
-    verify -> stage_a [label="Retry", condition="outcome=fail"]
-    verify -> exit    [label="Fallback"]
-
-    stage_b -> exit
+    start -> stage_a -> exit
 }
diff --git a/test/docs/core-concepts/agents/backend-demo.dot b/test/docs/core-concepts/agents/backend-demo.dot
deleted file mode 100644
index 449260cb9..000000000
--- a/test/docs/core-concepts/agents/backend-demo.dot
+++ /dev/null
@@ -1,18 +0,0 @@
-// Assembled from docs/core-concepts/agents.mdx snippets
-// Tests backend attribute and inline vs external prompts
-
-digraph BackendDemo {
-    graph [goal="Exercise agent backend and prompt patterns from the agents docs page"]
-
-    start [shape=Mdiamond, label="Start"]
-    exit  [shape=Msquare, label="Exit"]
-
-    // Line 47: CLI backend with explicit provider
-    implement [label="Implement", backend="cli", llm_provider="anthropic"]
-
-    // Line 95-96: Inline prompt
-    plan [label="Plan", prompt="Analyze the codebase and write a step-by-step plan."]
-
-    // Wiring
-    start -> plan -> implement -> exit
-}
diff --git a/test/docs/core-concepts/agents/run-backend-demo.toml b/test/docs/core-concepts/agents/run-backend-demo.toml
deleted file mode 100644
index 47d1e6238..000000000
--- a/test/docs/core-concepts/agents/run-backend-demo.toml
+++ /dev/null
@@ -1,12 +0,0 @@
-version = 1
-goal = "Exercise agent backend and prompt patterns from the agents docs page"
-graph = "backend-demo.dot"
-
-[sandbox]
-provider = "daytona"
-
-[sandbox.daytona]
-auto_stop_interval = 60
-
-[sandbox.daytona.labels]
-project = "arc-docs-test"
diff --git a/test/docs/core-concepts/models/example.dot b/test/docs/core-concepts/models/example.dot
index a127b74fc..27ce421a8 100644
--- a/test/docs/core-concepts/models/example.dot
+++ b/test/docs/core-concepts/models/example.dot
@@ -1,6 +1,5 @@
 digraph Example {
     graph [
-        goal="Demonstrate model stylesheet",
         model_stylesheet="
             *        { llm_model: claude-haiku-4-5; }
             .coding  { llm_model: claude-sonnet-4-5; reasoning_effort: high; }
@@ -8,12 +7,11 @@ digraph Example {
         "
     ]
 
-    start [shape=Mdiamond, label="Start"]
-    exit  [shape=Msquare, label="Exit"]
-
+    start [shape=Mdiamond]
     spec     [label="Write Spec"]
     implement [label="Implement", class="coding"]
     review   [label="Review"]
+    exit [shape=Msquare]
 
     start -> spec -> implement -> review -> exit
 }
diff --git a/test/docs/examples/clone-substack/scripts/fix-fmt.sh b/test/docs/examples/clone-substack/scripts/fix-fmt.sh
index a0b8dd282..c5ada8e18 100755
--- a/test/docs/examples/clone-substack/scripts/fix-fmt.sh
+++ b/test/docs/examples/clone-substack/scripts/fix-fmt.sh
@@ -1,2 +1,2 @@
-#\!/bin/sh
-echo "stub: $0"
+#!/bin/sh
+echo "fix-fmt stub"
diff --git a/test/docs/examples/clone-substack/scripts/validate-artifacts.sh b/test/docs/examples/clone-substack/scripts/validate-artifacts.sh
index a0b8dd282..4488287ca 100755
--- a/test/docs/examples/clone-substack/scripts/validate-artifacts.sh
+++ b/test/docs/examples/clone-substack/scripts/validate-artifacts.sh
@@ -1,2 +1,2 @@
-#\!/bin/sh
-echo "stub: $0"
+#!/bin/sh
+echo "validate-artifacts stub"
diff --git a/test/docs/examples/clone-substack/scripts/validate-browser.sh b/test/docs/examples/clone-substack/scripts/validate-browser.sh
index a0b8dd282..fd2a2d810 100755
--- a/test/docs/examples/clone-substack/scripts/validate-browser.sh
+++ b/test/docs/examples/clone-substack/scripts/validate-browser.sh
@@ -1,2 +1,2 @@
-#\!/bin/sh
-echo "stub: $0"
+#!/bin/sh
+echo "validate-browser stub"
diff --git a/test/docs/examples/clone-substack/scripts/validate-build.sh b/test/docs/examples/clone-substack/scripts/validate-build.sh
index a0b8dd282..ed3fdd3ac 100755
--- a/test/docs/examples/clone-substack/scripts/validate-build.sh
+++ b/test/docs/examples/clone-substack/scripts/validate-build.sh
@@ -1,2 +1,2 @@
-#\!/bin/sh
-echo "stub: $0"
+#!/bin/sh
+echo "validate-build stub"
diff --git a/test/docs/examples/clone-substack/scripts/validate-fmt.sh b/test/docs/examples/clone-substack/scripts/validate-fmt.sh
index a0b8dd282..8a35aab82 100755
--- a/test/docs/examples/clone-substack/scripts/validate-fmt.sh
+++ b/test/docs/examples/clone-substack/scripts/validate-fmt.sh
@@ -1,2 +1,2 @@
-#\!/bin/sh
-echo "stub: $0"
+#!/bin/sh
+echo "validate-fmt stub"
diff --git a/test/docs/examples/clone-substack/scripts/validate-test.sh b/test/docs/examples/clone-substack/scripts/validate-test.sh
index a0b8dd282..60d3690b5 100755
--- a/test/docs/examples/clone-substack/scripts/validate-test.sh
+++ b/test/docs/examples/clone-substack/scripts/validate-test.sh
@@ -1,2 +1,2 @@
-#\!/bin/sh
-echo "stub: $0"
+#!/bin/sh
+echo "validate-test stub"
diff --git a/test/docs/execution/context/example.dot b/test/docs/execution/context/example.dot
index 1a04e4bef..44069792c 100644
--- a/test/docs/execution/context/example.dot
+++ b/test/docs/execution/context/example.dot
@@ -1,10 +1,8 @@
 digraph Example {
-    graph [goal="Test default fidelity setting", default_fidelity="summary:medium"]
+    graph [default_fidelity="summary:medium"]
+    start [shape=Mdiamond]
+    work [label="Work"]
+    exit [shape=Msquare]
 
-    start [shape=Mdiamond, label="Start"]
-    exit  [shape=Msquare, label="Exit"]
-
-    plan [label="Plan", prompt="Create a plan."]
-
-    start -> plan -> exit
+    start -> work -> exit
 }
diff --git a/test/docs/execution/failures/example-02.dot b/test/docs/execution/failures/example-02.dot
index 872a15fc2..cfd35b848 100644
--- a/test/docs/execution/failures/example-02.dot
+++ b/test/docs/execution/failures/example-02.dot
@@ -1,11 +1,8 @@
 digraph Example {
-    graph [goal="Test max_node_visits with per-node max_visits", max_node_visits="20"]
+    graph [max_node_visits="20"]
+    start [shape=Mdiamond]
+    fix [label="Fix", max_visits=3]
+    exit [shape=Msquare]
 
-    start [shape=Mdiamond, label="Start"]
-    exit  [shape=Msquare, label="Exit"]
-
-    implement [label="Implement", prompt="Implement the feature."]
-    fix [label="Fix", max_visits=3, prompt="Fix the issues."]
-
-    start -> implement -> fix -> exit
+    start -> fix -> exit
 }
diff --git a/test/docs/execution/failures/example-03.dot b/test/docs/execution/failures/example-03.dot
index 4bde8526b..cd618a600 100644
--- a/test/docs/execution/failures/example-03.dot
+++ b/test/docs/execution/failures/example-03.dot
@@ -1,12 +1,10 @@
 digraph Example {
-    graph [goal="Test retry_target attributes", retry_target="plan"]
-
-    start [shape=Mdiamond, label="Start"]
-    exit  [shape=Msquare, label="Exit"]
-
-    plan [label="Plan", prompt="Create a plan."]
-    implement [label="Implement", prompt="Implement the plan."]
-    verify [label="Verify", goal_gate="true", retry_target="implement", prompt="Verify the implementation."]
+    graph [retry_target="plan"]
+    start [shape=Mdiamond]
+    plan [label="Plan"]
+    implement [label="Implement"]
+    verify [shape=box, label="Verify", goal_gate="true", retry_target="implement"]
+    exit [shape=Msquare]
 
     start -> plan -> implement -> verify -> exit
 }
diff --git a/test/docs/execution/failures/example-04.dot b/test/docs/execution/failures/example-04.dot
index 622d37f01..dadd8bd62 100644
--- a/test/docs/execution/failures/example-04.dot
+++ b/test/docs/execution/failures/example-04.dot
@@ -1,10 +1,8 @@
 digraph Example {
-    graph [goal="Test stall_timeout setting", stall_timeout="300"]
+    graph [stall_timeout="300"]
+    start [shape=Mdiamond]
+    work [label="Work"]
+    exit [shape=Msquare]
 
-    start [shape=Mdiamond, label="Start"]
-    exit  [shape=Msquare, label="Exit"]
-
-    plan [label="Plan", prompt="Create a plan."]
-
-    start -> plan -> exit
+    start -> work -> exit
 }
diff --git a/test/docs/execution/failures/example.dot b/test/docs/execution/failures/example.dot
index fe0eb4b71..e9755b4f8 100644
--- a/test/docs/execution/failures/example.dot
+++ b/test/docs/execution/failures/example.dot
@@ -1,10 +1,8 @@
 digraph Example {
-    graph [goal="Test max_node_visits graph setting", max_node_visits="20"]
+    graph [max_node_visits="20"]
+    start [shape=Mdiamond]
+    work [label="Work"]
+    exit [shape=Msquare]
 
-    start [shape=Mdiamond, label="Start"]
-    exit  [shape=Msquare, label="Exit"]
-
-    implement [label="Implement", prompt="Implement the feature."]
-
-    start -> implement -> exit
+    start -> work -> exit
 }
diff --git a/test/docs/execution/interviews/default-choice.dot b/test/docs/execution/interviews/default-choice.dot
index f78a5c233..cd214c906 100644
--- a/test/docs/execution/interviews/default-choice.dot
+++ b/test/docs/execution/interviews/default-choice.dot
@@ -1,23 +1,10 @@
-// Assembled from docs/execution/interviews.mdx snippet
-// Tests human gate with default_choice attribute
-
 digraph DefaultChoice {
-    graph [goal="Exercise human gate with default choice from the interviews docs page"]
-
-    start [shape=Mdiamond, label="Start"]
-    exit  [shape=Msquare, label="Exit"]
-
-    deploy [label="Deploy", prompt="Deploy the changes."]
-    abort  [label="Abort", prompt="Abort the deployment."]
-
-    // Line 114: Human gate with human.default_choice
+    start [shape=Mdiamond]
     approve [shape=hexagon, label="Approve?", human.default_choice="deploy"]
+    deploy [label="Deploy"]
+    exit [shape=Msquare]
 
     start -> approve
-
-    approve -> deploy [label="[A] Deploy"]
-    approve -> abort  [label="[R] Abort"]
-
-    deploy -> exit
-    abort  -> exit
+    approve -> deploy [label="[D] Deploy"]
+    approve -> exit   [label="[S] Skip"]
 }
diff --git a/test/docs/execution/run-configuration/c-i.dot b/test/docs/execution/run-configuration/c-i.dot
index 9eced6dec..a70eaea96 100644
--- a/test/docs/execution/run-configuration/c-i.dot
+++ b/test/docs/execution/run-configuration/c-i.dot
@@ -1,11 +1,9 @@
 digraph CI {
     graph [goal="Run tests for $repo_name"]
-
-    start [shape=Mdiamond, label="Start"]
-    exit  [shape=Msquare, label="Exit"]
-
+    start [shape=Mdiamond]
     clone [shape=parallelogram, script="git clone $repo_url repo"]
     test  [label="Test", prompt="Run the $language test suite."]
+    exit [shape=Msquare]
 
     start -> clone -> test -> exit
 }
diff --git a/test/docs/extract_dots.py b/test/docs/extract_dots.py
index 8528a0ddf..aa1a55668 100644
--- a/test/docs/extract_dots.py
+++ b/test/docs/extract_dots.py
@@ -86,7 +86,11 @@ def find_custom_vars(code: str) -> list[str]:
 
 
 def main():
-    skip_pages = {"changelog/2026-02-27"}  # deprecated syntax
+    skip_pages = {
+        "changelog/2026-02-27",        # deprecated handler=codergen syntax
+        "human-tools/vnc-access",       # workflows not yet working
+        "human-tools/vpn-connections",  # workflows not yet working
+    }
 
     extracted = 0
     skipped_snippets = 0
diff --git a/test/docs/human-tools/preview/build-and-preview.dot b/test/docs/human-tools/preview/build-and-preview.dot
new file mode 100644
index 000000000..5fd30dd93
--- /dev/null
+++ b/test/docs/human-tools/preview/build-and-preview.dot
@@ -0,0 +1,14 @@
+digraph BuildAndPreview {
+    graph [goal="Build and preview the marketing site"]
+
+    start [shape=Mdiamond, label="Start"]
+    exit  [shape=Msquare, label="Exit"]
+
+    build [label="Build Site", prompt="Install dependencies and build the marketing site."]
+    serve [label="Start Dev Server", shape=parallelogram, script="cd site && npx serve -l 3000 &"]
+    review [shape=hexagon, label="Review Preview"]
+
+    start -> build -> serve -> review
+    review -> exit [label="[A] Approve"]
+    review -> build [label="[R] Revise"]
+}
diff --git a/test/docs/integrations/brave-search/research.dot b/test/docs/integrations/brave-search/research.dot
new file mode 100644
index 000000000..9ac633a9a
--- /dev/null
+++ b/test/docs/integrations/brave-search/research.dot
@@ -0,0 +1,12 @@
+digraph Research {
+    graph [goal="Research and summarize a topic"]
+    rankdir=LR
+
+    start [shape=Mdiamond, label="Start"]
+    exit  [shape=Msquare, label="Exit"]
+
+    research  [label="Research", prompt="Use web_search to find recent information about $goal. Save your findings to research.md."]
+    summarize [label="Summarize", shape=tab, prompt="Read research.md and write a concise summary of the key findings."]
+
+    start -> research -> summarize -> exit
+}
diff --git a/test/docs/integrations/daytona/example.dot b/test/docs/integrations/daytona/example.dot
new file mode 100644
index 000000000..737f1c5b7
--- /dev/null
+++ b/test/docs/integrations/daytona/example.dot
@@ -0,0 +1,8 @@
+digraph Example {
+    graph [stall_timeout="1200"]
+    start [shape=Mdiamond]
+    work [label="Work"]
+    exit [shape=Msquare]
+
+    start -> work -> exit
+}
diff --git a/test/docs/tutorials/sub-workflow/implement-and-test.dot b/test/docs/tutorials/sub-workflow/implement-and-test.dot
new file mode 100644
index 000000000..7b2ac793d
--- /dev/null
+++ b/test/docs/tutorials/sub-workflow/implement-and-test.dot
@@ -0,0 +1,15 @@
+digraph ImplementAndTest {
+    graph [goal="Implement the plan and make tests pass"]
+    rankdir=LR
+
+    start [shape=Mdiamond, label="Start"]
+    exit  [shape=Msquare, label="Exit"]
+
+    implement [label="Implement", prompt="Read plan.md and implement every step. Write the code and tests to disk."]
+    validate  [label="Validate", shape=parallelogram, script="python3 -m pytest -v 2>&1 || true"]
+    gate      [shape=diamond, label="Tests passing?"]
+
+    start -> implement -> validate -> gate
+    gate -> exit      [label="Pass", condition="outcome=success"]
+    gate -> implement [label="Fix", max_visits=5]
+}
diff --git a/test/docs/tutorials/sub-workflow/sub-workflow.dot b/test/docs/tutorials/sub-workflow/sub-workflow.dot
new file mode 100644
index 000000000..1ae7b24fb
--- /dev/null
+++ b/test/docs/tutorials/sub-workflow/sub-workflow.dot
@@ -0,0 +1,13 @@
+digraph SubWorkflow {
+    graph [goal="Create a Python module (tempconv.py) that converts between Celsius, Fahrenheit, and Kelvin, with pytest tests"]
+    rankdir=LR
+
+    start [shape=Mdiamond, label="Start"]
+    exit  [shape=Msquare, label="Exit"]
+
+    plan   [label="Plan", prompt="Analyze the goal. List the functions needed, their signatures, and edge cases. Write the plan to plan.md."]
+    impl   [label="Implement & Test", shape=house, stack.child_dotfile="implement-and-test.dot", manager.max_cycles=50]
+    review [label="Review", prompt="Read every file the child workflow created. Run the tests yourself with 'python3 -m pytest -v'. Verify the implementation matches plan.md and all tests pass. Write a short verdict to review.md."]
+
+    start -> plan -> impl -> review -> exit
+}
diff --git a/test/docs/workflows/human-in-the-loop/hitl-patterns.dot b/test/docs/workflows/human-in-the-loop/hitl-patterns.dot
index c741900e9..7e7504ade 100644
--- a/test/docs/workflows/human-in-the-loop/hitl-patterns.dot
+++ b/test/docs/workflows/human-in-the-loop/hitl-patterns.dot
@@ -1,40 +1,19 @@
-// Assembled from docs/workflows/human-in-the-loop.mdx snippets
-// Tests human gates: basic, freeform, and default_choice
-
 digraph HitlPatterns {
-    graph [goal="Exercise human-in-the-loop patterns from the HITL docs page"]
-
-    start [shape=Mdiamond, label="Start"]
-    exit  [shape=Msquare, label="Exit"]
-
-    plan      [label="Plan", prompt="Create an implementation plan."]
-    implement [label="Implement", prompt="Implement the plan."]
-    custom    [label="Custom", prompt="Handle custom input."]
-
-    // Line 13-17: Basic human gate with accelerators
+    start [shape=Mdiamond]
+    plan [label="Plan"]
     approve [shape=hexagon, label="Approve Plan"]
-
-    // Line 39-43: Freeform input on human gate
+    implement [label="Implement"]
     review [shape=hexagon, label="Review Changes"]
+    custom [label="Handle Custom"]
+    exit [shape=Msquare]
 
-    // Line 53: Default choice on timeout
-    deploy_gate [shape=hexagon, label="Deploy?", human.default_choice="approve"]
-
-    // Wiring
     start -> plan -> approve
-
     approve -> implement [label="[A] Approve"]
     approve -> plan      [label="[R] Revise"]
     approve -> exit      [label="[S] Skip"]
-
     implement -> review
-
-    review -> deploy_gate [label="[A] Approve"]
-    review -> plan        [label="[R] Revise"]
-    review -> custom      [freeform=true]
-
-    custom -> deploy_gate
-
-    deploy_gate -> exit [label="[A] Approve"]
-    deploy_gate -> plan [label="[R] Revise"]
+    review -> exit      [label="[A] Approve"]
+    review -> plan      [label="[R] Revise"]
+    review -> custom    [freeform=true]
+    custom -> exit
 }
diff --git a/test/docs/workflows/stages-and-nodes/all-node-types.dot b/test/docs/workflows/stages-and-nodes/all-node-types.dot
index 2c2f9c190..51b8a8e63 100644
--- a/test/docs/workflows/stages-and-nodes/all-node-types.dot
+++ b/test/docs/workflows/stages-and-nodes/all-node-types.dot
@@ -1,69 +1,31 @@
-// Assembled from docs/workflows/stages-and-nodes.mdx snippets
-// Tests every node type documented on that page
-
 digraph AllNodeTypes {
-    graph [goal="Exercise every node type from the stages-and-nodes docs page"]
-
-    // Line 23: Start node
     start [shape=Mdiamond, label="Start"]
-
-    // Line 33: Exit node
+    plan [label="Plan"]
+    approve [shape=hexagon, label="Approve Plan"]
+    implement [label="Implement", prompt="Read plan.md and implement every step."]
+    spec [label="Write Spec", shape=tab, prompt="Write a brief spec for a string utility module."]
+    test [label="Run Tests", shape=parallelogram, script="cargo test 2>&1 || true"]
+    gate [shape=diamond, label="Tests passing?"]
+    cooldown [label="Wait 30s", shape=insulator, duration="30s"]
+    fork [label="Fan Out", shape=component, join_policy="wait_all", error_policy="continue"]
+    security [label="Security Review"]
+    architecture [label="Architecture Review"]
+    quality [label="Quality Review"]
+    merge [label="Merge Results", shape=tripleoctagon]
     exit [shape=Msquare, label="Exit"]
 
-    // Line 43: Agent node
-    implement [label="Implement", prompt="Read plan.md and implement every step."]
-
-    // Line 74-81: Subgraph cluster with thread_id
-    subgraph cluster_impl {
-        node [fidelity="full", thread_id="impl"]
-        plan_thread      [label="Plan Thread"]
-        implement_thread [label="Implement Thread"]
-        review_thread    [label="Review Thread"]
-    }
-
-    // Line 90: Prompt (tab) node
-    spec [label="Write Spec", shape=tab, prompt="Write a brief spec for a string utility module."]
-
-    // Line 102: Command (parallelogram) node
-    test [label="Run Tests", shape=parallelogram, script="echo 'tests passed' 2>&1 || true"]
-
-    // Line 117-120: Human (hexagon) node
-    approve [shape=hexagon, label="Approve Plan"]
-
-    // Line 132: Wait (insulator) node
-    cooldown [label="Wait 1s", shape=insulator, duration="1s"]
-
-    // Line 146-149: Conditional (diamond) node
-    gate [shape=diamond, label="Tests passing?"]
-
-    // Line 161-165: Parallel (component) fan-out node
-    fork [label="Fan Out", shape=component, join_policy="wait_all", error_policy="continue"]
-
-    // Line 198-203: Merge (tripleoctagon) fan-in node
-    merge [label="Merge Results", shape=tripleoctagon]
-
-    // Branches for fan-out
-    security     [label="Security", prompt="Check for security issues."]
-    architecture [label="Architecture", prompt="Check architecture."]
-
-    // Wiring
-    start -> spec -> implement -> test -> gate
-
-    gate -> approve    [label="Pass", condition="outcome=success"]
-    gate -> implement  [label="Fix"]
-
-    approve -> plan_thread [label="[A] Approve"]
-    approve -> implement   [label="[R] Revise"]
-
-    plan_thread -> implement_thread -> review_thread -> cooldown
-
-    cooldown -> fork
-
+    start -> plan -> approve
+    approve -> spec [label="[A] Approve"]
+    approve -> plan [label="[R] Revise"]
+    spec -> implement -> test -> gate
+    gate -> fork      [label="Pass", condition="outcome=success"]
+    gate -> cooldown  [label="Fix"]
+    cooldown -> implement
     fork -> security
     fork -> architecture
-
+    fork -> quality
     security     -> merge
     architecture -> merge
-
+    quality      -> merge
     merge -> exit
 }
diff --git a/test/docs/workflows/transitions/transition-patterns.dot b/test/docs/workflows/transitions/transition-patterns.dot
index 898f452a0..d7993fc0f 100644
--- a/test/docs/workflows/transitions/transition-patterns.dot
+++ b/test/docs/workflows/transitions/transition-patterns.dot
@@ -1,13 +1,7 @@
-// Assembled from docs/workflows/transitions.mdx snippets
-// Tests conditions, human gates, unconditional edges, weights, and agent routing
-
 digraph TransitionPatterns {
-    graph [goal="Exercise every transition pattern from the transitions docs page"]
-
-    start [shape=Mdiamond, label="Start"]
-    exit  [shape=Msquare, label="Exit"]
-
-    // Line 103-114: Agent transition with routing JSON
+    start [shape=Mdiamond]
+    plan [label="Plan"]
+    implement [label="Implement"]
     review [
         label="Review",
         shape=tab,
@@ -17,60 +11,20 @@ digraph TransitionPatterns {
             looks good, respond with: \
             {\"preferred_next_label\": \"approve\"}."
     ]
+    gate [shape=diamond, label="Check Result"]
+    fast_path [label="Fast Path"]
+    slow_path [label="Slow Path"]
+    preferred [label="Preferred"]
+    exit [shape=Msquare]
 
-    fix [label="Fix", prompt="Fix the issues found in the review."]
-
-    // Line 32-33: Condition on edges
-    gate [shape=diamond, label="Tests passing?"]
-
-    // Line 60: Boolean flag condition (truthiness check)
-    flag_gate [shape=diamond, label="Flag check"]
-
-    // Line 68-79: Compound conditions
-    deploy_gate [shape=diamond, label="Deploy gate"]
-
-    deploy  [label="Deploy", prompt="Deploy the changes."]
-    proceed [label="Proceed", prompt="Proceed with next step."]
-    retry   [label="Retry", prompt="Retry the operation."]
-
-    // Line 123-128: Human gate transitions
-    approve [shape=hexagon, label="Approve Plan"]
-    plan [label="Plan", prompt="Create a plan."]
-    skip [label="Skip", prompt="Skip this step."]
-
-    // Line 137: Chain syntax (unconditional)
-    start -> plan -> review
-
-    review -> fix     [label="Fix"]
-    review -> gate    [label="Approve", weight=10]
-
-    fix -> review
-
-    // Line 32-33: Conditional edges
-    gate -> exit      [label="Pass", condition="outcome=success"]
-    gate -> flag_gate [label="Fix", condition="outcome=fail"]
-    gate -> exit      [label="Fallback"]
-
-    // Line 60: Truthiness check
-    flag_gate -> deploy_gate [condition="outcome=success"]
-    flag_gate -> retry
-
-    // Line 68-70: Compound condition
-    deploy_gate -> deploy  [condition="outcome=success && context.tests_passed=true"]
-    // Line 72: OR condition
-    deploy_gate -> proceed [condition="outcome=success || outcome=partial_success"]
-    deploy_gate -> exit    [label="Fallback"]
-
-    deploy -> approve
-
-    // Line 123-128: Human gate edges
-    approve -> exit [label="[A] Approve"]
-    approve -> plan [label="[R] Revise"]
-    approve -> skip [label="[S] Skip"]
-
-    skip -> exit
-    proceed -> exit
-    retry -> review
-
-    // Line 152-153: Weight tiebreaking (tested on deploy_gate fallback)
+    start -> plan -> implement -> review
+    review -> implement [label="Fix"]
+    review -> gate      [label="Approve"]
+    review -> gate      [weight=-1]
+    gate -> fast_path [condition="outcome=success"]
+    gate -> slow_path
+    fast_path -> preferred [weight=10]
+    fast_path -> exit      [weight=1]
+    slow_path -> exit
+    preferred -> exit
 }
diff --git a/test/docs/workflows/variables/example.dot b/test/docs/workflows/variables/example.dot
index 4fc1b1d7a..37e44ff3c 100644
--- a/test/docs/workflows/variables/example.dot
+++ b/test/docs/workflows/variables/example.dot
@@ -1,10 +1,9 @@
 digraph Example {
     graph [goal="Implement the login feature"]
 
-    start [shape=Mdiamond, label="Start"]
-    exit  [shape=Msquare, label="Exit"]
-
+    start [shape=Mdiamond]
     plan [label="Plan", prompt="Create a plan for: $goal"]
+    exit [shape=Msquare]
 
     start -> plan -> exit
 }