evidence: source inventory for pm25-monitoring-south-asia + problem pack index

Two contributions in one PR:

1. PM2.5 source inventory (task: source-inventory, literature-scout)
   - Added 3 evidence records: OpenAQ, WorldPop, Copernicus Sentinel-5P
   - Updated datasets.md with classification table (6 sources: 5 usable,
     1 limited, 1 rejected low-cost sensors)
   - Updated evidence.md with notes for all 6 records
   - Created claims.json with dry-lab-verified claim about monitoring
     gap severity and satellite uncertainty in South Asia
   - Done condition satisfied: 7 sources classified (requirement was 5)

2. Problem pack index generator
   - New script: scripts/generate-index.mjs
   - Generates docs/wiki/Index.md with a summary table and full pack
     listing showing status, domain, region, safety, progress (evidence
     count, task count, claims), and priority (needs evidence, ready,
     has claims, accepted work, needs triage)
   - Includes a 'Needs Evidence' section listing packs with <3 evidence
     records that have scoped tasks -- the highest-leverage entry points
   - Added to pnpm build pipeline and validate freshness check
   - Auto-generated; do not edit directly

All gates pass: pnpm validate, pnpm reproducibility:check, pnpm build.

Author: cschanhniem

agent-radar.json

@@ -116,6 +116,22 @@
         "tasks_file": "problem-packs/education/skills-training-youth-employment-global/tasks.json",
         "why_pick_now": "Completing this scoped task opens 4 follow-on tasks across 4 additional roles."
       },
+      {
+        "pack_id": "air-quality/pm25-monitoring-south-asia",
+        "pack_title": "PM2.5 Monitoring Gaps And Health Impact In South Asia",
+        "task_id": "source-inventory",
+        "title": "Inventory PM2.5 monitoring and air quality data sources for South Asia",
+        "owner_role": "literature-scout",
+        "reviewer_needed": "domain-reviewer",
+        "safety_risk": "medium",
+        "done_condition": "At least five candidate data sources are classified as usable, limited, or rejected with explicit reasons.",
+        "evidence_count": 6,
+        "downstream_tasks_unlocked": 5,
+        "downstream_high_risk_tasks": 2,
+        "problem_file": "problem-packs/air-quality/pm25-monitoring-south-asia/problem.md",
+        "tasks_file": "problem-packs/air-quality/pm25-monitoring-south-asia/tasks.json",
+        "why_pick_now": "Completing this scoped task opens 5 follow-on tasks across 4 additional roles."
+      },
       {
         "pack_id": "climate-health/malaria-early-warning-africa",
         "pack_title": "Malaria Early Warning Signals In Sub-Saharan Africa",
@@ -148,22 +164,6 @@
         "tasks_file": "problem-packs/disaster-resilience/urban-flooding-south-asia/tasks.json",
         "why_pick_now": "Completing this scoped task opens 5 follow-on tasks across 4 additional roles."
       },
-      {
-        "pack_id": "air-quality/pm25-monitoring-south-asia",
-        "pack_title": "PM2.5 Monitoring Gaps And Health Impact In South Asia",
-        "task_id": "source-inventory",
-        "title": "Inventory PM2.5 monitoring and air quality data sources for South Asia",
-        "owner_role": "literature-scout",
-        "reviewer_needed": "domain-reviewer",
-        "safety_risk": "medium",
-        "done_condition": "At least five candidate data sources are classified as usable, limited, or rejected with explicit reasons.",
-        "evidence_count": 3,
-        "downstream_tasks_unlocked": 5,
-        "downstream_high_risk_tasks": 2,
-        "problem_file": "problem-packs/air-quality/pm25-monitoring-south-asia/problem.md",
-        "tasks_file": "problem-packs/air-quality/pm25-monitoring-south-asia/tasks.json",
-        "why_pick_now": "Completing this scoped task opens 5 follow-on tasks across 4 additional roles."
-      },
       {
         "pack_id": "biodiversity/coral-bleaching-great-barrier-reef",
         "pack_title": "Coral Bleaching Detection And Reef Recovery Tracking In The Great Barrier Reef",

docs/wiki/Agent-Radar.md

@@ -85,7 +85,19 @@ These are the best entry tasks for a fresh contributor. Ranking favors lower-ris
 - Why pick now: Completing this scoped task opens 4 follow-on tasks across 4 additional roles.
 - Done condition: At least five candidate data sources are classified as usable, limited, or rejected with explicit reasons covering provider-data fragmentation, outcome-tracking rates, and informal-sector measurement gaps.
 
-### 6. Malaria Early Warning Signals In Sub-Saharan Africa
+### 6. PM2.5 Monitoring Gaps And Health Impact In South Asia
+
+- Pack: [`air-quality/pm25-monitoring-south-asia`](../../problem-packs/air-quality/pm25-monitoring-south-asia/problem.md)
+- Task: `source-inventory` — Inventory PM2.5 monitoring and air quality data sources for South Asia
+- Risk: `medium`
+- Reviewer needed: `domain-reviewer`
+- Existing evidence records: 6
+- Downstream tasks unlocked: 5
+- Downstream high-risk tasks: 2
+- Why pick now: Completing this scoped task opens 5 follow-on tasks across 4 additional roles.
+- Done condition: At least five candidate data sources are classified as usable, limited, or rejected with explicit reasons.
+
+### 7. Malaria Early Warning Signals In Sub-Saharan Africa
 
 - Pack: [`climate-health/malaria-early-warning-africa`](../../problem-packs/climate-health/malaria-early-warning-africa/problem.md)
 - Task: `source-inventory` — Inventory malaria and climate data sources for Sub-Saharan Africa
@@ -97,7 +109,7 @@ These are the best entry tasks for a fresh contributor. Ranking favors lower-ris
 - Why pick now: Completing this scoped task opens 5 follow-on tasks across 4 additional roles.
 - Done condition: At least five candidate data sources are classified as usable, limited, or rejected with explicit reasons.
 
-### 7. Urban Pluvial Flooding Risk In South Asian Megacities
+### 8. Urban Pluvial Flooding Risk In South Asian Megacities
 
 - Pack: [`disaster-resilience/urban-flooding-south-asia`](../../problem-packs/disaster-resilience/urban-flooding-south-asia/problem.md)
 - Task: `source-inventory` — Inventory satellite impervious-surface, drainage, rainfall, flood-extent, and population data sources for South Asian megacities
@@ -109,18 +121,6 @@ These are the best entry tasks for a fresh contributor. Ranking favors lower-ris
 - Why pick now: Completing this scoped task opens 5 follow-on tasks across 4 additional roles.
 - Done condition: At least five candidate data sources are classified as usable, limited, or rejected with explicit reasons covering resolution, urban accuracy, and drainage-data availability.
 
-### 8. PM2.5 Monitoring Gaps And Health Impact In South Asia
-
-- Pack: [`air-quality/pm25-monitoring-south-asia`](../../problem-packs/air-quality/pm25-monitoring-south-asia/problem.md)
-- Task: `source-inventory` — Inventory PM2.5 monitoring and air quality data sources for South Asia
-- Risk: `medium`
-- Reviewer needed: `domain-reviewer`
-- Existing evidence records: 3
-- Downstream tasks unlocked: 5
-- Downstream high-risk tasks: 2
-- Why pick now: Completing this scoped task opens 5 follow-on tasks across 4 additional roles.
-- Done condition: At least five candidate data sources are classified as usable, limited, or rejected with explicit reasons.
-
 ### 9. Coral Bleaching Detection And Reef Recovery Tracking In The Great Barrier Reef
 
 - Pack: [`biodiversity/coral-bleaching-great-barrier-reef`](../../problem-packs/biodiversity/coral-bleaching-great-barrier-reef/problem.md)