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feat: Body Cluster - Placeholder Registry Implementation
Registers 17 body composition and measurement placeholders with complete metadata:

Weight & Trends (5):
- weight_aktuell: Latest weight snapshot
- weight_trend: 28d delta with direction (increasing/decreasing/stable)
- weight_7d_median: 7d median for noise reduction
- weight_28d_slope: Linear regression slope (kg/day, 28d window)
- weight_90d_slope: Linear regression slope (kg/day, 90d window)

Body Composition (5):
- kf_aktuell: Latest body fat percentage
- fm_28d_change: Fat mass delta (28d)
- lbm_28d_change: Lean body mass delta (28d)
- waist_hip_ratio: Waist-to-hip ratio
- recomposition_quadrant: FM/LBM change classification (optimal/cut_with_risk/bulk/unfavorable)

Circumference Deltas (5):
- waist_28d_delta: Waist circumference change (28d)
- arm_28d_delta: Arm circumference change (28d)
- chest_28d_delta: Chest circumference change (28d)
- hip_28d_delta: Hip circumference change (28d)
- thigh_28d_delta: Thigh circumference change (28d)

Summaries (2):
- caliper_summary: Body fat text summary (BF% + method + date)
- circ_summary: Circumference summary (Best-of-Each strategy)

All placeholders with evidence-based tagging:
- 22 metadata fields per placeholder (374 total fields)
- CODE_DERIVED: Technical fields, formulas from code inspection
- DRAFT_DERIVED: Semantic fields from canonical requirements
- MIXED: Calculation logic, formulas, thresholds
- TO_VERIFY: Architecture layer decisions

Critical formulas documented in known_limitations:
- Linear Regression: slope = Σ((x - x̄)(y - ȳ)) / Σ((x - x̄)²)
- FM/LBM Calculation: FM = weight × (BF% / 100), LBM = weight - FM
- Circumference Delta Logic: latest IN window vs. oldest BEFORE window (can span >28d)
- Recomposition Quadrants: Sign-based (FM sign × LBM sign → quadrant)
- Best-of-Each (circ_summary): Each measurement point shows individually latest value (mixed dates)

Known limitations captured:
- weight_trend: Zeit-Inkonsistenz (canonical requires 28d, code accepts parameter)
- Circumference Deltas: Reference logic can extend beyond window if measurements sparse
- FM/LBM: Requires same-date weight + body_fat_pct measurements
- Recomposition: No tolerance zone for "stable" (small changes trigger quadrant flips)
- Summaries: Text format (canonical recommends structured JSON, kept as-is per NO-CHANGE rule)

Evidence distribution:
- CODE_DERIVED: 62% (metadata from code inspection)
- DRAFT_DERIVED: 18% (from canonical requirements)
- MIXED: 15% (formulas, calculation logic)
- TO_VERIFY: 5% (architecture decisions)
- UNRESOLVED: <1%

Registry now contains 31 placeholders total (14 Nutrition + 17 Body).

Files:
- backend/placeholder_registrations/body_metrics.py (NEW, 1307 lines)
- backend/placeholder_registrations/__init__.py (UPDATED, +body_metrics import)

Framework: PLACEHOLDER_REGISTRY_FRAMEWORK.md (verbindlich ab 2026-04-02)
Change Plan: .claude/task/rework_0b_placeholder/BODY_CLUSTER_CHANGE_PLAN.md
Code Inspection: .claude/task/rework_0b_placeholder/BODY_CLUSTER_CODE_INSPECTION.md

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-04-02 18:57:15 +02:00
.gitea/workflows ci: fix workflows - prod deploys to bodytrack/, dev to bodytrack-dev/ 2026-03-17 13:11:53 +01:00
backend feat: Body Cluster - Placeholder Registry Implementation 2026-04-02 18:57:15 +02:00
docs feat: Placeholder Metadata V2 - Normative Implementation + ZIP Export Fix 2026-03-29 21:23:37 +02:00
frontend feat: Add Placeholder Metadata Export to Admin Panel 2026-03-29 20:37:52 +02:00
nginx feat: initial commit – Mitai Jinkendo v9a 2026-03-16 13:35:11 +01:00
.env.example small update 2026-03-18 09:07:08 +01:00
.gitignore fix: AdminUserRestrictionsPage - use exact TierLimitsPage input system 2026-03-20 11:34:48 +01:00
CLAUDE.md docs: Phase 0c completion + new issue #55 2026-03-28 22:22:16 +01:00
docker-compose.dev-env.yml fix: add missing /app/data volume for SQLite migration 2026-03-18 12:11:37 +01:00
docker-compose.dev.yml feat: initial commit – Mitai Jinkendo v9a 2026-03-16 13:35:11 +01:00
docker-compose.yml docker-compose.yml aktualisiert 2026-03-19 08:28:30 +01:00
find-container.sh chore: rollback point before unified prompt system refactoring (Issue #28) 2026-03-25 10:42:18 +01:00
README.md feat: initial commit – Mitai Jinkendo v9a 2026-03-16 13:35:11 +01:00
SETUP.md feat: initial commit – Mitai Jinkendo v9a 2026-03-16 13:35:11 +01:00
test-pipeline-api.sh chore: add pipeline system test scripts (Issue #28) 2026-03-25 09:47:58 +01:00
test-pipeline-backend.sh fix: use postgres container for psql commands 2026-03-25 09:54:44 +01:00
test-unified-migration.sh fix: migration 020 SQL syntax - correlated subquery issue 2026-03-25 12:58:02 +01:00

BodyTrack

Körpervermessung & Körperfett Tracker selbst gehostet, PWA-fähig.

Features

  • Umfänge & Caliper-Messungen (4 Methoden) mit Verlauf
  • Abgeleitete Werte: WHR, WHtR, FFMI, Magermasse
  • Verlaufsdiagramme (Gewicht, KF%, Taille, …)
  • KI-Interpretationen via Claude (Anthropic)
  • Fortschrittsfotos mit Galerie
  • PDF & CSV Export
  • PWA installierbar auf iPhone-Homescreen
  • Alle Daten lokal auf deinem Server (SQLite)

Schnellstart

1. Voraussetzungen

# Docker & Docker Compose installieren (Ubuntu)
curl -fsSL https://get.docker.com | sh
sudo usermod -aG docker $USER
# Neu einloggen

2. Projekt klonen / kopieren

mkdir ~/bodytrack && cd ~/bodytrack
# Dateien hierher kopieren

3. API Key setzen

cp .env.example .env
nano .env
# ANTHROPIC_API_KEY=sk-ant-... eintragen

4. Starten

docker compose up -d

App läuft auf: http://DEINE-IP:3000

5. iPhone Als App installieren

  1. Safari öffnen → http://DEINE-IP:3000
  2. Teilen-Button (□↑) → „Zum Home-Bildschirm"
  3. BodyTrack erscheint als App-Icon

6. Von außen erreichbar (optional)

# Tailscale (einfachste Lösung  VPN zu deinem MiniPC)
curl -fsSL https://tailscale.com/install.sh | sh
sudo tailscale up
# Dann: http://TAILSCALE-IP:3000

Updates

docker compose pull
docker compose up -d --build

Backup

# Datenbank & Fotos sichern
docker run --rm -v bodytrack-data:/data -v bodytrack-photos:/photos \
  -v $(pwd):/backup alpine \
  tar czf /backup/bodytrack_backup_$(date +%Y%m%d).tar.gz /data /photos

Konfiguration

Variable Beschreibung Standard
ANTHROPIC_API_KEY Claude API Key (für KI-Analyse)

Ports

Port Dienst
3000 Frontend (Nginx)
8000 Backend API (intern)