feat(skill): add sensitive point varga markers

README.md

@@ -4,8 +4,8 @@
 
 [![License: MIT](https://img.shields.io/badge/license-MIT-green)](LICENSE)
 [![Python 3.11+](https://img.shields.io/badge/python-3.11+-blue)](https://www.python.org/)
-[![Techniques](https://img.shields.io/badge/techniques-77-blueviolet)](references/technique_registry.json)
-[![Covered](https://img.shields.io/badge/covered-68-green)](references/technique_registry.json)
+[![Techniques](https://img.shields.io/badge/techniques-79-blueviolet)](references/technique_registry.json)
+[![Covered](https://img.shields.io/badge/covered-70-green)](references/technique_registry.json)
 [![Complete](https://img.shields.io/badge/complete-9-brightgreen)](references/technique_registry.json)
 [![Partial](https://img.shields.io/badge/partial-0-lightgrey)](references/technique_registry.json)
 
@@ -31,7 +31,7 @@
 This is a **Vedic (Jyotish) astrology analysis system** designed for deep, auditable full-chart readings. It is NOT a simple ephemeris calculator — it is a multi-stage interpretive pipeline that:
 
 1. **Computes** divisional charts (D1/D9/D10/...) via Swiss Ephemeris
-2. **Runs** 77 registered techniques (Dashas, Yogas, Shadbala, Ashtakavarga, Transits...)
+2. **Runs** 79 registered techniques (Dashas, Yogas, Shadbala, Ashtakavarga, Transits...)
 3. **Routes** the analysis through strict workflow paths depending on question type (career / relationship / wealth / timing)
 4. **Audits** every technique used — declaring what was called, what is complete/covered, and which limitations affect confidence
 5. **Degrades gracefully** — limitations are labeled, not silently over-promising
@@ -45,7 +45,7 @@ This is a **Vedic (Jyotish) astrology analysis system** designed for deep, audit
 | Technique Audit Table (confidence labeling) | ✅ | ❌ | ❌ | ❌ |
 | Capability degradation (limits are explicit) | ✅ | ❌ | ❌ | ❌ |
 | MEVG external verification gates | ✅ | ❌ | ❌ | ❌ |
-| 77 techniques registered | ✅ | ✅ (50+) | ✅ (200+) | ✅ |
+| 79 techniques registered | ✅ | ✅ (50+) | ✅ (200+) | ✅ |
 | Traditional algorithm benchmarked | ✅ mixed depth | ✅ | ✅ | ✅ |
 | Docker / MCP Server | ✅ | ❌ | ✅ | ❌ |
 | English docs / PyPI package | ✅ in progress | ✅ | ✅ | ✅ |

references/technique_registry.json

@@ -554,6 +554,48 @@
       "audit_label": "22nd Drekkana",
       "missing_impact": "A classical danger-sensitive Drekkana trigger is absent, weakening accident and adversity screening."
     },
+    "bhrigu_bindu": {
+      "name": "Bhrigu Bindu",
+      "domains": [
+        "sensitive_point",
+        "timing",
+        "destiny"
+      ],
+      "status": "covered",
+      "knowledge_refs": [
+        "references/bhrigu-pada-dasha-marriage-counting.md",
+        "references/feature-gap-matrix-2026.md"
+      ],
+      "commands": [
+        "scripts/varga.py"
+      ],
+      "output_paths": [
+        "scripts.varga.calc_bhrigu_bindu"
+      ],
+      "audit_label": "Bhrigu Bindu",
+      "missing_impact": "A commonly used Moon-Rahu destiny trigger is unavailable, weakening event-sensitive reading depth."
+    },
+    "sarpa_drekkana": {
+      "name": "Sarpa Drekkana",
+      "domains": [
+        "varga",
+        "toxicity",
+        "crisis"
+      ],
+      "status": "covered",
+      "knowledge_refs": [
+        "references/translated-articles/3印度占星_preview.txt",
+        "references/feature-gap-matrix-2026.md"
+      ],
+      "commands": [
+        "scripts/varga.py"
+      ],
+      "output_paths": [
+        "scripts.varga.calc_sarpa_drekkana"
+      ],
+      "audit_label": "Sarpa Drekkana",
+      "missing_impact": "A classical toxic-crisis Drekkana marker is absent, thinning advanced risk and temperament screening."
+    },
     "bhava_chalit": {
       "name": "Bhava Chalit",
       "domains": [

scripts/varga.py

@@ -126,6 +126,47 @@ def calc_22nd_drekkana(lagna_lon: float) -> Dict:
         'lord': SIGN_LORDS.get(_sn(sign_idx), ''),
     }
 
+
+def calc_bhrigu_bindu(moon_lon: float, rahu_lon: float) -> Dict:
+    """Compute Bhrigu Bindu as the midpoint on the Rahu->Moon forward arc."""
+    moon = moon_lon % 360
+    rahu = rahu_lon % 360
+    arc = (moon - rahu) % 360
+    longitude = (rahu + arc / 2.0) % 360
+    sign_idx = _si(longitude)
+    degree_in_sign = round(longitude - sign_idx * 30, 4)
+    return {
+        'longitude': round(longitude, 4),
+        'sign_idx': sign_idx,
+        'sign': _sn(sign_idx),
+        'degree_in_sign': degree_in_sign,
+        'arc_mode': 'forward_rahu_to_moon',
+        'lord': SIGN_LORDS.get(_sn(sign_idx), ''),
+    }
+
+
+SARPA_DREKKANA_SIGNS = {'Cancer': 2, 'Scorpio': 1, 'Pisces': 3}
+
+
+def calc_sarpa_drekkana(lon: float) -> Dict:
+    """Classify Sarpa Drekkana using the classical water-sign sensitive drekkanas."""
+    base = calc_varga(lon, 3)
+    sign = _sn(_si(lon))
+    degree_in_sign = round((lon % 30), 4)
+    drekkana_number = int(degree_in_sign / 10) + 1
+    expected = SARPA_DREKKANA_SIGNS.get(sign)
+    return {
+        'longitude': round(lon % 360, 4),
+        'sign': sign,
+        'sign_idx': _si(lon),
+        'degree_in_sign': degree_in_sign,
+        'drekkana_number': drekkana_number,
+        'd3_sign': base['sign'],
+        'd3_sign_idx': base['sign_idx'],
+        'is_sarpa_drekkana': bool(expected == drekkana_number),
+        'definition': 'Cancer-2, Scorpio-1, Pisces-3',
+    }
+
 def dignity(planet, sign_idx):
     if planet in EXALT_SIGN and sign_idx==EXALT_SIGN[planet]: return 'Exalted'
     if planet in DEBIL_SIGN and sign_idx==DEBIL_SIGN[planet]: return 'Debilitated'

tests/test_varga_bphs.py

@@ -7,8 +7,10 @@ from hypothesis import given
 from hypothesis import strategies as st
 from varga import (
     SIGNS,
+    calc_bhrigu_bindu,
     calc_22nd_drekkana,
     calc_64th_navamsa,
+    calc_sarpa_drekkana,
     calc_varga,
     varga_map,
 )
@@ -106,3 +108,38 @@ def test_22nd_drekkana_counts_forward_from_lagna_drekkana() -> None:
     assert result["sign_idx"] == expected_sign_idx
     assert result["sign"] == SIGNS[expected_sign_idx]
     assert result["offset_from_lagna_drekkana"] == 22
+
+
+def test_bhrigu_bindu_uses_rahu_to_moon_arc_midpoint() -> None:
+    result = calc_bhrigu_bindu(270.5, 160.2333333333)
+    assert result["longitude"] == 215.3667
+    assert result["sign"] == "Scorpio"
+    assert result["degree_in_sign"] == 5.3667
+
+
+def test_bhrigu_bindu_handles_wraparound_across_zero_aries() -> None:
+    result = calc_bhrigu_bindu(10.0, 350.0)
+    assert result["longitude"] == 0.0
+    assert result["sign"] == "Aries"
+    assert result["degree_in_sign"] == 0.0
+
+
+def test_sarpa_drekkana_detects_classical_sensitive_ranges() -> None:
+    cancer_second = calc_sarpa_drekkana(105.0)
+    scorpio_first = calc_sarpa_drekkana(215.0)
+    pisces_third = calc_sarpa_drekkana(355.0)
+    safe_aries = calc_sarpa_drekkana(15.0)
+
+    assert cancer_second["is_sarpa_drekkana"] is True
+    assert cancer_second["sign"] == "Cancer"
+    assert cancer_second["drekkana_number"] == 2
+
+    assert scorpio_first["is_sarpa_drekkana"] is True
+    assert scorpio_first["sign"] == "Scorpio"
+    assert scorpio_first["drekkana_number"] == 1
+
+    assert pisces_third["is_sarpa_drekkana"] is True
+    assert pisces_third["sign"] == "Pisces"
+    assert pisces_third["drekkana_number"] == 3
+
+    assert safe_aries["is_sarpa_drekkana"] is False