feat: add Rigorous Against Prompt/Spec as CORE auditing dimension

- agent-work-auditor: Add 'Rigorous Against Prompt/Spec' as 7th core dimension
- agent-work-auditor: Update spec-driven extension to note this dimension is now CORE
- Enables autonomous auditing workflow across all spec-driven phases

Author: lindoelio

.changeset/cozy-knives-boil.md

@@ -0,0 +1,9 @@
+---
+'spec-driven-steroids': minor
+---
+
+feat: add Rigorous Against Prompt/Spec as CORE auditing dimension
+
+- agent-work-auditor: Add "Rigorous Against Prompt/Spec" as 7th core dimension (was in spec-driven extension)
+- agent-work-auditor: Update spec-driven extension to note this dimension is now CORE
+- Enables autonomous auditing workflow across all spec-driven phases

packages/cli/templates/universal/skills/agent-work-auditor/SKILL.md

@@ -36,6 +36,7 @@ Universal dimensions evaluated for every audit:
 | Traceability | Can we trace it? | Partial |
 | Safety | Could it cause harm? | No |
 | Maintainability | Will future devs thank us? | Partial |
+| Rigorous Against Prompt/Spec | Does it match the original intent? | Partial |
 
 ### Layer 2: Change-Type Modules (Per-Invocation)
 
@@ -100,7 +101,7 @@ Activated when relevant context is detected:
    └─ Core (always) → Type module → Extensions (if detected)
 
 5. EVALUATE dimensions
-   └─ Universal (6) → Type-specific → Extension-specific
+   └─ Universal (7) → Type-specific → Extension-specific
 
 6. CLASSIFY findings
    └─ Severity (blocking, warning, info)

packages/cli/templates/universal/skills/agent-work-auditor/extensions/spec-driven.md

@@ -2,6 +2,8 @@
 
 Auto-activates when `.specs/` directory or spec artifacts are detected.
 
+**Note:** "Rigorous Against Prompt/Spec" is a CORE dimension (always active for every audit). This extension provides additional spec-specific verification beyond that core check.
+
 ## Activation Triggers
 
 - `.specs/` directory exists
@@ -34,13 +36,14 @@ Verify prerequisite phases are complete:
 | Tasks | Design approved |
 | Implementation | Tasks approved |
 
-### 3. Spec Adherence
+### 3. Spec-Specific Adherence
 
-Verify implementation matches approved design:
+Additional spec-driven checks beyond CORE "Rigorous Against Prompt/Spec":
 
 - Code changes match TASK descriptions
 - No scope creep (changes outside spec scope)
 - No descoping without explicit approval
+- Phase gate sequencing is correct
 
 ### 4. Scope Creep Detection