fix: use separate pipeline files instead of multi-document YAML

YAML anchors don't work across document boundaries in multi-document
files. Using separate files in .woodpecker/ directory instead, which
is the recommended approach and matches WeightTracker's pattern.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

.woodpecker.yml

@@ -1,169 +0,0 @@
-variables:
-  - &dotnet_image "mcr.microsoft.com/dotnet/sdk:10.0-preview"
-  - &kaniko_image "gcr.io/kaniko-project/executor:debug"
-
-# =============================================================================
-# PULL REQUESTS - Build and test only
-# =============================================================================
-when:
-  - event: pull_request
-
-steps:
-  - name: restore
-    image: *dotnet_image
-    commands:
-      - dotnet restore
-
-  - name: build
-    image: *dotnet_image
-    commands:
-      - dotnet build --no-restore -c Release
-    depends_on: [restore]
-
-  - name: test
-    image: *dotnet_image
-    commands:
-      - dotnet test --no-build -c Release --logger "console;verbosity=detailed"
-    depends_on: [build]
-
----
-# =============================================================================
-# MAIN BRANCH - Build, test, version, release
-# =============================================================================
-when:
-  - event: push
-    branch: main
-
-steps:
-  - name: restore
-    image: *dotnet_image
-    commands:
-      - dotnet restore
-
-  - name: build
-    image: *dotnet_image
-    commands:
-      - dotnet build --no-restore -c Release
-    depends_on: [restore]
-
-  - name: test
-    image: *dotnet_image
-    commands:
-      - dotnet test --no-build -c Release --logger "console;verbosity=detailed"
-    depends_on: [build]
-
-  # Determine next version based on conventional commits
-  - name: version
-    image: alpine/git
-    commands:
-      - apk add --no-cache bash
-      - |
-        # Get the latest tag or default to v0.0.0
-        LATEST_TAG=$(git describe --tags --abbrev=0 2>/dev/null || echo "v0.0.0")
-        echo "Latest tag: $LATEST_TAG"
-
-        # Parse current version
-        VERSION=${LATEST_TAG#v}
-        MAJOR=$(echo $VERSION | cut -d. -f1)
-        MINOR=$(echo $VERSION | cut -d. -f2)
-        PATCH=$(echo $VERSION | cut -d. -f3)
-
-        # Get commits since last tag
-        if [ "$LATEST_TAG" = "v0.0.0" ]; then
-          COMMITS=$(git log --pretty=format:"%s" HEAD)
-        else
-          COMMITS=$(git log --pretty=format:"%s" ${LATEST_TAG}..HEAD)
-        fi
-
-        # Determine bump type from conventional commits
-        BUMP="patch"
-        if echo "$COMMITS" | grep -qiE "^feat(\(.+\))?!:|BREAKING CHANGE:"; then
-          BUMP="major"
-        elif echo "$COMMITS" | grep -qiE "^feat(\(.+\))?:"; then
-          BUMP="minor"
-        fi
-
-        echo "Bump type: $BUMP"
-
-        # Calculate new version
-        case $BUMP in
-          major)
-            MAJOR=$((MAJOR + 1))
-            MINOR=0
-            PATCH=0
-            ;;
-          minor)
-            MINOR=$((MINOR + 1))
-            PATCH=0
-            ;;
-          patch)
-            PATCH=$((PATCH + 1))
-            ;;
-        esac
-
-        NEW_VERSION="${MAJOR}.${MINOR}.${PATCH}"
-        echo "New version: $NEW_VERSION"
-
-        # Save version for other steps
-        echo "$NEW_VERSION" > .version
-        echo "v${NEW_VERSION}" > .tag
-    depends_on: [test]
-
-  # Package NuGet
-  - name: package
-    image: *dotnet_image
-    commands:
-      - VERSION=$(cat .version)
-      - echo "Packaging version $VERSION"
-      - dotnet pack PaperlessMCP/PaperlessMCP.csproj --no-build -c Release -o ./artifacts /p:Version=$VERSION /p:PackageVersion=$VERSION
-      - ls -la ./artifacts/
-    depends_on: [version]
-
-  # Build and push Docker with Kaniko
-  - name: docker
-    image: *kaniko_image
-    environment:
-      GHCR_USERNAME:
-        from_secret: github_username
-      GHCR_TOKEN:
-        from_secret: github_token
-    commands:
-      - VERSION=$(cat .version)
-      - mkdir -p /kaniko/.docker
-      - echo "{\"auths\":{\"ghcr.io\":{\"username\":\"$GHCR_USERNAME\",\"password\":\"$GHCR_TOKEN\"}}}" > /kaniko/.docker/config.json
-      - /kaniko/executor
-        --context=$CI_WORKSPACE/PaperlessMCP
-        --dockerfile=$CI_WORKSPACE/PaperlessMCP/Dockerfile
-        --destination=ghcr.io/barryw/paperlessmcp:v${VERSION}
-        --destination=ghcr.io/barryw/paperlessmcp:latest
-        --build-arg=VERSION=${VERSION}
-    depends_on: [version]
-
-  # Create git tag and push
-  - name: git-tag
-    image: alpine/git
-    environment:
-      GITHUB_TOKEN:
-        from_secret: github_token
-    commands:
-      - TAG=$(cat .tag)
-      - VERSION=$(cat .version)
-      - echo "Creating tag $TAG"
-      - |
-        git config user.email "ci@woodpecker.local"
-        git config user.name "Woodpecker CI"
-        git remote set-url origin https://x-access-token:${GITHUB_TOKEN}@github.com/barryw/PaperlessMCP.git
-        git tag -a "$TAG" -m "Release $VERSION"
-        git push origin "$TAG"
-    depends_on: [package, docker]
-
-  # Create GitHub release
-  - name: release
-    image: woodpeckerci/plugin-github-release
-    settings:
-      api_key:
-        from_secret: github_token
-      files:
-        - artifacts/*.nupkg
-      prerelease: false
-    depends_on: [git-tag]