chore: remove remaining Hetzner references across codebase

Deleted:
- DOCKER_REGISTRY_SETUP.md, QUICK_START_CICD.md (legacy CI/CD docs)
- docs/ULOAD-DEPLOYMENT.md (Hetzner VPS deployment guide)
- scripts/get-ssh-key.sh, scripts/remove-coolify-references.sh (legacy scripts)

Updated Hetzner → MinIO references in:
- shared-storage (package.json, README, client.ts, types.ts)
- App CLAUDE.md files (mukke, storage, planta, picture)
- .claude/GUIDELINES.md, sveltekit-web.md guideline
- TROUBLESHOOTING.md, SETUP_TEMPLATES.md (replaced IPs with placeholders)
- GIT_WORKFLOW.md, COMMANDS.md
- services/matrix-project-doc-bot/CLAUDE.md

Remaining Hetzner mentions are in historical devlogs/audits and docs
that list Hetzner as a hosting alternative (not as active infrastructure).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

scripts/get-ssh-key.sh

@@ -1,18 +0,0 @@
-#!/bin/bash
-
-# Get SSH Private Key Content for GitHub Secret
-
-echo "================================================"
-echo "  SSH PRIVATE KEY FOR STAGING_SSH_KEY"
-echo "================================================"
-echo ""
-echo "Copy the ENTIRE output below (including BEGIN and END lines):"
-echo ""
-echo "================================================"
-
-cat ~/.ssh/hetzner_deploy_key
-
-echo "================================================"
-echo ""
-echo "This is the value for: STAGING_SSH_KEY"
-echo ""

scripts/remove-coolify-references.sh

@@ -1,73 +0,0 @@
-#!/bin/bash
-
-# Script to remove Coolify references and replace with Docker Compose equivalents
-# Usage: ./scripts/remove-coolify-references.sh
-
-set -e
-
-echo "Starting Coolify reference removal..."
-
-# Function to replace text in files
-replace_in_file() {
-    local file=$1
-    local search=$2
-    local replace=$3
-
-    if [ -f "$file" ]; then
-        sed -i.bak "s|$search|$replace|g" "$file" && rm "${file}.bak"
-        echo "  ✓ Updated: $file"
-    fi
-}
-
-# Common replacements across all files
-echo "Applying common replacements..."
-
-# Platform references
-find . -type f \( -name "*.md" -o -name "*.yml" -o -name "*.yaml" \) \
-    -not -path "*/node_modules/*" \
-    -not -path "*/.git/*" \
-    -not -path "*/archive/*" \
-    -exec sed -i.bak 's/Coolify + Hetzner/Docker Compose + Hetzner VPS/g' {} \; \
-    -exec sed -i.bak 's/Coolify (open-source PaaS)/Docker Compose orchestration/g' {} \; \
-    -exec sed -i.bak 's/Coolify server/Hetzner VPS/g' {} \; \
-    -exec sed -i.bak 's/Coolify Platform/Docker Compose/g' {} \; \
-    -exec sed -i.bak 's/Coolify managed/Docker Compose managed/g' {} \; \
-    -exec sed -i.bak 's/Install Coolify/Set up Docker Compose/g' {} \; \
-    -exec sed -i.bak 's/Coolify UI/Docker Compose configuration/g' {} \; \
-    -exec sed -i.bak 's/Coolify deployment/Docker Compose deployment/g' {} \; \
-    -exec sed -i.bak 's/Platform: Coolify/Platform: Docker Compose/g' {} \; \
-    -exec sed -i.bak 's/Platform\*\*: Coolify/Platform**: Docker Compose/g' {} \;
-
-# Clean up backup files
-find . -name "*.bak" -type f -delete
-
-echo "✓ Common replacements complete"
-
-# Specific file updates
-echo "Updating specific files..."
-
-# Update TODO.md to remove Coolify installation steps
-if [ -f "cicd/TODO.md" ]; then
-    echo "  - Updating cicd/TODO.md..."
-    # Remove the "Install Coolify" section header and related tasks
-    sed -i.bak '/### 1.3 Install Coolify/,/\*\*\*\*/d' cicd/TODO.md
-    sed -i.bak 's/Provision production server/Set up production server/g' cicd/TODO.md
-    sed -i.bak 's/Install Coolify on production server/Set up Docker Compose on production server/g' cicd/TODO.md
-    rm cicd/TODO.md.bak
-fi
-
-# Update PLAN.md
-if [ -f "cicd/PLAN.md" ]; then
-    echo "  - Updating cicd/PLAN.md..."
-    sed -i.bak 's/Coolify with auto-scaling/Docker Compose with manual scaling/g' cicd/PLAN.md
-    sed -i.bak '/Coolify Documentation/d' cicd/PLAN.md
-    sed -i.bak '/GitHub Repository.*coolify/d' cicd/PLAN.md
-    rm cicd/PLAN.md.bak
-fi
-
-# Clean up remaining backup files
-find . -name "*.bak" -type f -delete
-
-echo "✅ Coolify reference removal complete!"
-echo ""
-echo "Files modified. Please review changes with: git diff"