feat: add logging config generator script (refs #81)

Create generate-log-config.sh that maps a single LOG_LEVEL env var to
per-container settings for Backend, Frontend, PostgreSQL, Redis, and
Traefik. Script validates input and generates .env.logging file.

Integrate script into staging and production CI/CD pipelines.
Remove obsolete SPRINTS.md calendar file.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

scripts/ci/generate-log-config.sh

@@ -0,0 +1,69 @@
+#!/bin/bash
+# generate-log-config.sh - Generate .env.logging from LOG_LEVEL
+# Maps a single LOG_LEVEL environment variable to per-container settings
+#
+# Usage: ./generate-log-config.sh [LOG_LEVEL]
+#   LOG_LEVEL: DEBUG, INFO, WARN, or ERROR (default: INFO)
+#
+# Output: Creates .env.logging file with container-specific log settings
+#
+# Exit codes:
+#   0 - Configuration generated successfully
+#   1 - Invalid LOG_LEVEL provided
+
+set -euo pipefail
+
+LOG_LEVEL="${1:-INFO}"
+
+# Validate input
+case "$LOG_LEVEL" in
+  DEBUG|INFO|WARN|ERROR) ;;
+  *)
+    echo "Error: Invalid LOG_LEVEL '$LOG_LEVEL'. Must be DEBUG, INFO, WARN, or ERROR." >&2
+    exit 1
+    ;;
+esac
+
+# Convert to lowercase for services that need it
+LOG_LEVEL_LOWER=$(echo "$LOG_LEVEL" | tr '[:upper:]' '[:lower:]')
+
+# Map PostgreSQL log settings based on level
+case "$LOG_LEVEL" in
+  DEBUG) POSTGRES_LOG_STATEMENT="all"; POSTGRES_LOG_MIN_DURATION="0" ;;
+  INFO)  POSTGRES_LOG_STATEMENT="ddl"; POSTGRES_LOG_MIN_DURATION="500" ;;
+  WARN)  POSTGRES_LOG_STATEMENT="none"; POSTGRES_LOG_MIN_DURATION="1000" ;;
+  ERROR) POSTGRES_LOG_STATEMENT="none"; POSTGRES_LOG_MIN_DURATION="-1" ;;
+esac
+
+# Map Redis log level
+case "$LOG_LEVEL" in
+  DEBUG) REDIS_LOGLEVEL="debug" ;;
+  INFO)  REDIS_LOGLEVEL="verbose" ;;
+  WARN)  REDIS_LOGLEVEL="notice" ;;
+  ERROR) REDIS_LOGLEVEL="warning" ;;
+esac
+
+# Generate .env.logging file
+cat > .env.logging << EOF
+# Generated by generate-log-config.sh - DO NOT EDIT MANUALLY
+# Regenerate with: ./scripts/ci/generate-log-config.sh $LOG_LEVEL
+LOG_LEVEL=$LOG_LEVEL
+
+# Backend/OCR (Pino)
+BACKEND_LOG_LEVEL=$LOG_LEVEL_LOWER
+
+# Frontend (Vite)
+VITE_LOG_LEVEL=$LOG_LEVEL_LOWER
+
+# PostgreSQL
+POSTGRES_LOG_STATEMENT=$POSTGRES_LOG_STATEMENT
+POSTGRES_LOG_MIN_DURATION=$POSTGRES_LOG_MIN_DURATION
+
+# Redis
+REDIS_LOGLEVEL=$REDIS_LOGLEVEL
+
+# Traefik
+TRAEFIK_LOG_LEVEL=$LOG_LEVEL
+EOF
+
+echo "Generated .env.logging with LOG_LEVEL=$LOG_LEVEL"