docs: Journey Principle + Mission Marketplace naming + Dashboard prep

- JOURNEY_PRINCIPLE.md (v1.0, LOCKED):

  - Five phases: Discover, Capture, Process, Outcome, Manage

  - Maps to both quiXzoom and Landvex

  - Screen mapping table

  - Balance check reveals Capture/Process/Outcome are empty

  - Verification: every screen must belong to a phase

- EXPERIENCE_AUDIT_QA.md updated:

  - Screen 3 renamed: Public Map -> Mission Marketplace

  - Added Phase column: Discover

  - One-Sentence Test updated: which missions not how much

  - Added Journey Principle reference

  - Screen 4: Dashboard (Landvex) - awaiting screen

  - Screen 5: Results/Decision View (Landvex) - awaiting screen

- Next: Landvex Dashboard audit (stresstest for Foundation v1.0)

Rationale: Journey Principle prevents screens from floating without

context. Mission Marketplace better reflects the page's purpose.

Dashboard is the most complex screen - best stresstest for principles.

docs/design/EXPERIENCE_AUDIT_QA.md

@@ -179,10 +179,12 @@ If it takes two or three sentences, the screen is trying to do too much.
 
 ---
 
-## Screen 3: quiXzoom Public Map (Proposed)
+## Screen 3: quiXzoom Mission Marketplace (Proposed)
 
 **Product:** quiXzoom  
-**Status:** 🟡 Proposed design
+**Internal Name:** Mission Marketplace (not "Public Map")  
+**Status:** 🟡 Proposed design  
+**Phase:** Discover
 
 ### Proposed Design
 
@@ -214,7 +216,9 @@ If it takes two or three sentences, the screen is trying to do too much.
 
 ### One-Sentence Test
 
-**"I can see how many missions are near me and how much I could earn."**
+**Target:** "I can see which missions are near me and what they pay."
+
+**Result:** ✅ Pass — concrete, avoids income promise
 
 ### Issues
 
@@ -227,6 +231,8 @@ If it takes two or three sentences, the screen is trying to do too much.
 
 **Verdict:** ✅ Strong — follows "From Reality → Decision" flow.
 
+**Journey Principle:** Discover phase ✅
+
 **Improvements:**
 1. Add real-time activity indicators
 2. Soften income estimate with disclaimer