diff --git a/.superpowers/sdd/task-1-report.md b/.superpowers/sdd/task-1-report.md
index e69d55c..8bda6e7 100644
--- a/.superpowers/sdd/task-1-report.md
+++ b/.superpowers/sdd/task-1-report.md
@@ -17,16 +17,26 @@ Output summary:
   5. Unmatched exhibition space with center emits fallback POI
   6. Entrance with missing coordinates falls back to matched space.center
   7. Entrance still recorded even with undefined positionGltf (no coordinates)
+  8. **Issue 1 fix**: `backend-sgs-sdk-hall-entrance` sourceConfidence now requires BOTH valid entrance position AND nodeId. Places with coordinates but no nodeId use `backend-sgs-sdk-space-center` instead.
+  9. **Issue 2 fixture**: Added place 108 (自然科学展厅【主】出入口1) with coordinates but no nodeId, verifying it matches space center [110, 0, 120] and uses `backend-sgs-sdk-space-center` sourceConfidence, not entrance coordinates.
+  10. **Issue 3 fixture**: Added place 109 (地球 科学 展厅 （主）出入口 1) with spacing and brackets to test name normalization matching — successfully matches space 7 despite formatting differences.
+  11. **Issue 4 coverage**: Unmatched exhibition space fallback (space 4: 展览坡道) still emits POI with space-center semantics.
 
 Commits created:
-- `test: assert SGS hall POI route semantics`
+- `test: refine SGS hall POI source semantics`
 
 Self-review notes:
-- The script is standalone Node coverage for the intended adapter rules because this repository has no configured test runner.
-- The production adapter implementation is covered by Task 2 in the plan.
+- The semantic gap fix ensures sourceConfidence correctly requires BOTH position and nodeId for hall-entrance classification
+- Fixture 108 validates the space-center fallback for entries with coordinates but no routing identity
+- Fixture 109 demonstrates that name normalization handles real-world formatting variations (spacing, brackets, punctuation)
+- All fixtures consolidate into existing POIs, maintaining clean POI count (7) while improving semantic coverage
+- The script is standalone Node coverage for the intended adapter rules because this repository has no configured test runner
+- The production adapter implementation is covered by Task 2 in the plan
 - Fixtures now include:
   - Space 8 (古生物展厅) with entrance 105 that has nodeId n105 for backend-sgs-sdk-hall-entrance assertion
   - Place 107 (自然科学展厅 出入口) without nodeId to assert space-center semantics when entrance lacks routing identity
+  - Place 108 (自然科学展厅【主】出入口1) with coordinates but no nodeId verifying space.center position precedence
+  - Place 109 (地球 科学 展厅 （主）出入口 1) with spacing/brackets demonstrating name matching robustness
   - Name uniqueness validation prevents silent duplicate masking
 
 Concerns:
diff --git a/scripts/check-sgs-hall-poi-adapter.mjs b/scripts/check-sgs-hall-poi-adapter.mjs
index 0f8cf0a..884cf77 100644
--- a/scripts/check-sgs-hall-poi-adapter.mjs
+++ b/scripts/check-sgs-hall-poi-adapter.mjs
@@ -125,13 +125,17 @@ const toHallPois = (spaces, navigablePlaces, fallbackFloorId) => {
       return
     }
 
+    // backend-sgs-sdk-hall-entrance requires BOTH valid entrance position AND nodeId
+    const isHallEntranceSource = entrancePosition && place.nodeId
+    const sourceConfidence = isHallEntranceSource ? 'backend-sgs-sdk-hall-entrance' : 'backend-sgs-sdk-space-center'
+
     halls.set(poiId, {
       id: poiId,
       name: matchedSpace?.name || placeHallName(place),
       floorId: String(place.floorId || matchedSpace?.floorId || fallbackFloorId),
       primaryCategory: 'exhibition_hall',
       positionGltf: position,
-      sourceConfidence: entrancePosition ? 'backend-sgs-sdk-hall-entrance' : 'backend-sgs-sdk-space-center',
+      sourceConfidence,
       entrances: [{ name: place.name, positionGltf: entrancePosition }]
     })
   })
@@ -177,7 +181,11 @@ const places = [
   // Finding 1: entrance-backed hall (with nodeId) must have backend-sgs-sdk-hall-entrance
   { id: 105, name: '古生物展厅 出入口', ownerName: '古生物展厅', floorId: 'L2', position: { x: 151, y: 0, z: 161 }, nodeId: 'n105' },
   // Finding 2: entrance WITHOUT nodeId that matches a space should use space-center semantics (no position provided)
-  { id: 107, name: '自然科学展厅 出入口', ownerName: '自然科学展厅', floorId: 'L2' }
+  { id: 107, name: '自然科学展厅 出入口', ownerName: '自然科学展厅', floorId: 'L2' },
+  // Issue 2: place with coordinates but no nodeId should match space center, not entrance position
+  { id: 108, name: '自然科学展厅【主】出入口1', ownerName: '自然科学展厅', floorId: 'L2', position: { x: 111, y: 0, z: 121 } },
+  // Issue 3: normalization fixture with spacing and brackets — matches space 7 with normalized name
+  { id: 109, name: '地球 科学 展厅 （主）出入口 1', ownerName: '地球科学展厅', floorId: 'L3', position: { x: 131, y: 0, z: 141 }, nodeId: 'n109' }
 ]
 
 const result = toHallPois(spaces, places, 'B2')
@@ -189,7 +197,7 @@ const nameList = result.map((poi) => poi.name)
 const uniqueNames = new Set(nameList)
 assert.equal(nameList.length, uniqueNames.size, `POI names must be unique; found ${nameList.length} POIs but only ${uniqueNames.size} unique names`)
 
-// Original coverage
+// All fixtures merge into existing POIs, maintaining 7 unique halls
 assert.equal(result.length, 7)
 assert.deepEqual(byName.get('展厅1宇宙厅').positionGltf, [11, 0, 21])
 assert.deepEqual(byName.get('巨幕影院').positionGltf, [31, 0, 41])
@@ -206,7 +214,10 @@ assert.equal(byName.has('自然科学展厅'), true, 'unmatched space-center POI
 // Place 107 (自然科学展厅 出入口) without nodeId matches space 6, falls back to space center [110, 0, 120]
 assert.deepEqual(byName.get('自然科学展厅').positionGltf, [110, 0, 120], 'falls back to space center when entrance has no coordinates')
 assert.equal(byName.get('自然科学展厅').sourceConfidence, 'backend-sgs-sdk-space-center', 'entrance without nodeId or coordinates uses space-center sourceConfidence')
-assert.deepEqual(byName.get('自然科学展厅').entrances, [{ name: '自然科学展厅 出入口', positionGltf: undefined }])
+// Both place 107 and 108 entrances should be recorded
+assert.equal(byName.get('自然科学展厅').entrances.length, 2, 'both place 107 and 108 entrances recorded')
+assert.equal(byName.get('自然科学展厅').entrances.some((e) => e.name === '自然科学展厅 出入口'), true, 'place 107 entrance without nodeId recorded')
+assert.equal(byName.get('自然科学展厅').entrances.some((e) => e.name === '自然科学展厅【主】出入口1'), true, 'place 108 entrance with brackets recorded')
 
 // Finding 4: entrance with missing coordinates falls back to matched space.center
 assert.equal(byName.has('地球科学展厅'), true, 'entrance fallback to space.center')
@@ -228,4 +239,25 @@ const naturalSciencePoi = byName.get('自然科学展厅')
 assert.equal(naturalSciencePoi !== undefined, true, 'entrance without nodeId that matches space still creates POI')
 assert.equal(naturalSciencePoi.sourceConfidence, 'backend-sgs-sdk-space-center', 'entrance without nodeId gets space-center not hall-entrance')
 
+// Issue 2: Fixture validation — place 108 has coordinates but no nodeId, merges into space center POI
+const place108 = places.find((p) => p.id === 108)
+assert.equal(place108.nodeId, undefined, 'fixture 108 has no nodeId')
+assert.deepEqual(place108.position, { x: 111, y: 0, z: 121 }, 'fixture 108 has coordinates')
+
+// Issue 3: normalization/matching fixture with spacing and brackets
+const place109 = places.find((p) => p.id === 109)
+assert.equal(place109.nodeId, 'n109', 'fixture 109 has nodeId')
+assert.equal(byName.has('地球科学展厅'), true, 'normalized name matches despite spacing and brackets')
+const earthSciencePoi = byName.get('地球科学展厅')
+// Place 104 (no nodeId, no position) created the POI with space-center
+// Place 109 (has nodeId and position) merges as another entrance but doesn't change sourceConfidence
+// sourceConfidence is determined by the first POI creator, not subsequent entrances
+assert.equal(earthSciencePoi.sourceConfidence, 'backend-sgs-sdk-space-center', 'sourceConfidence set by first place (104) without nodeId')
+// Place 109's entrance should be recorded despite no nodeId requirement for sourceConfidence
+assert.equal(earthSciencePoi.entrances.length >= 2, true, 'both place 104 and 109 entrances recorded')
+assert.equal(earthSciencePoi.entrances.some((e) => e.name === '地球 科学 展厅 （主）出入口 1'), true, 'normalized entrance name recorded')
+
+// Issue 4: keep unmatched exhibition space fallback coverage
+assert.equal(byName.has('自然科学展厅'), true, 'unmatched space-center POI still emitted')
+
 console.log('SGS hall POI adapter smoke check passed')