Clarify baseline presets and extend income slider

app.py

@@ -8,7 +8,7 @@ from src.assumptions import (
     BASELINE,
     BASELINE_REFERENCE_OPTIONS,
     DATA_QUALITY_NOTES,
-    INCOME_SLIDER_MAX_UAH,
+    INCOME_THRESHOLD_OPTIONS_UAH,
     SALARY_ANCHORS_UAH,
     SOURCE_LINKS,
 )
@@ -30,6 +30,12 @@ def title_label(value: str) -> str:
     return value.replace("_", " ").title()
 
 
+def income_threshold_label(value: int) -> str:
+    if value == 0:
+        return "Any income"
+    return f"{format_count(value)} UAH"
+
+
 def format_percent(value: int | float) -> str:
     if value == 0:
         return "0%"
@@ -74,7 +80,7 @@ with st.sidebar:
             value=format_count(preset["value"]),
             help=(
                 f"{preset['note']} Formatted with commas. "
-                "Example: 10,000,000 means a synthetic reference pool, not Ukraine's total population."
+                "Demo is a fixed synthetic example. Custom means you choose your own starting audience."
             ),
         )
         try:
@@ -118,17 +124,16 @@ with st.sidebar:
             175,
             help="Interpolates a demo height-distribution coefficient.",
         )
-        income_min_uah = st.slider(
+        income_min_uah = st.select_slider(
             "Minimum monthly income, UAH",
-            min_value=0,
-            max_value=INCOME_SLIDER_MAX_UAH,
+            options=INCOME_THRESHOLD_OPTIONS_UAH,
             value=30_000,
-            step=5_000,
+            format_func=income_threshold_label,
             help=(
                 "Scenario salary threshold. 0 means no income filter. Salary anchors: Work.ua current benchmark is about "
                 f"{format_count(SALARY_ANCHORS_UAH['workua_current_average'])} UAH/month; "
                 f"KSE cites Work.ua January 2026 median at {format_count(SALARY_ANCHORS_UAH['kse_workua_jan_2026_median'])} UAH/month. "
-                "Very high thresholds such as 200,000 or 500,000 UAH/month use demo tail assumptions, not official percentiles."
+                "High thresholds up to 1,000,000 UAH/month are scenario stress-test cutoffs, not official maximum salary data."
             ),
         )
         st.caption(
@@ -271,7 +276,8 @@ st.write(
 )
 st.write(
     f"The income slider uses {format_count(SALARY_ANCHORS_UAH['workua_current_average'])} UAH/month as the current public job-market benchmark. "
-    "High values such as 200,000 or 500,000 UAH/month are supported as scenario stress-test cutoffs, not official salary percentiles."
+    "High values such as 200,000, 500,000, or 1,000,000 UAH/month are supported as scenario stress-test cutoffs. "
+    "They are not official salary percentiles or a claimed real maximum."
 )
 
 st.subheader("Data quality notes")

src/assumptions.py

@@ -14,7 +14,7 @@ BASELINE = BaselineAssumptions()
 
 BASELINE_REFERENCE_OPTIONS = {
     "demo_reference_pool": {
-        "label": "Demo working pool",
+        "label": "Demo working pool (10M)",
         "value": 10_000_000,
         "note": "Synthetic starting universe for scenario testing; not the full Ukraine population.",
     },
@@ -24,9 +24,9 @@ BASELINE_REFERENCE_OPTIONS = {
         "note": "Official pre-full-scale-invasion total population estimate cited by ACAPS.",
     },
     "custom": {
-        "label": "Custom baseline",
-        "value": 10_000_000,
-        "note": "Use when modeling a narrower adult, regional, platform, or pre-filtered pool.",
+        "label": "Custom starting pool",
+        "value": 1_000_000,
+        "note": "Editable starting universe for a narrower adult, regional, platform, or pre-filtered pool.",
     },
 }
 
@@ -36,7 +36,30 @@ SALARY_ANCHORS_UAH = {
     "workua_current_average": 28_600,
 }
 
-INCOME_SLIDER_MAX_UAH = 500_000
+INCOME_THRESHOLD_OPTIONS_UAH = [
+    0,
+    20_000,
+    25_000,
+    30_000,
+    35_000,
+    40_000,
+    45_000,
+    50_000,
+    60_000,
+    70_000,
+    80_000,
+    90_000,
+    100_000,
+    125_000,
+    150_000,
+    200_000,
+    250_000,
+    300_000,
+    400_000,
+    500_000,
+    750_000,
+    1_000_000,
+]
 
 INCOME_CURVE_POINTS_UAH = [
     (0, 1.0),
@@ -47,6 +70,8 @@ INCOME_CURVE_POINTS_UAH = [
     (100_000, 0.055),
     (200_000, 0.015),
     (500_000, 0.002),
+    (750_000, 0.001),
+    (1_000_000, 0.0005),
 ]
 
 SOURCE_LINKS = [
@@ -65,6 +90,16 @@ SOURCE_LINKS = [
         "url": "https://www.pfu.gov.ua/2170600-pokaznyk-serednoyi-zarobitnoyi-platy-za-2025-rik/",
         "note": "Official average wage indicator used for pension calculations; annual 2025 value is UAH 20,653.55.",
     },
+    {
+        "label": "DOU developer salary statistics",
+        "url": "https://jobs.dou.ua/salaries/?switch_lang=en",
+        "note": "IT salary survey and CSV-backed salary analytics for Ukrainian tech roles.",
+    },
+    {
+        "label": "Djinni salary guide",
+        "url": "https://guide.djinni.co/salaries",
+        "note": "Tech salary benchmarks for Ukraine-focused hiring; useful for high-income scenario context.",
+    },
     {
         "label": "ACAPS Ukraine population data sources report",
         "url": "https://www.acaps.org/fileadmin/Data_Product/Main_media/20230818_ACAPS_Thematic_report_Ukraine_estimates_and_sources_of_population_data.pdf",
@@ -190,7 +225,7 @@ DATA_QUALITY_NOTES = [
     },
     {
         "label": "Income",
-        "note": "Income and salary filters are sensitive to self-employment and informal earnings.",
+        "note": "Income thresholds above public medians are scenario cutoffs. Open sources do not provide a universal real maximum salary.",
     },
     {
         "label": "Height",