feat: add multi-project examples (giesing + fullstack) and examples README

examples/multi-project-giesing.yaml

@@ -0,0 +1,49 @@
+# Example: Multi-project run — improve writing tools, then dogfood them
+#
+# This multi-run first improves ArcheFlow's artifact routing and Colette's
+# voice validation in parallel (Layer 0), then uses the improved toolchain
+# to write the second Giesing Gschichte (Layer 1).
+#
+# Invoke:
+#   archeflow:multi-project --config examples/multi-project-giesing.yaml
+#   archeflow:multi-project --config examples/multi-project-giesing.yaml --dry-run
+
+name: giesing-story-v2
+description: "Improve writing tools, then write story #2 as dogfood"
+
+projects:
+  - id: archeflow
+    path: "."                          # archeflow repo itself
+    task: >
+      Add cross-project artifact summaries to the Explorer prompt so that
+      dependent runs receive structured context from upstream completions.
+      Update artifact-routing skill and add a test fixture.
+    workflow: fast
+    domain: code
+    depends_on: []
+
+  - id: colette
+    path: "../writing.colette"
+    task: >
+      Add a 'voice drift' validation command that compares a draft chapter
+      against the voice profile YAML and reports drift scores per paragraph.
+      Include pytest coverage for the scoring logic.
+    workflow: standard
+    domain: code
+    depends_on: []
+
+  - id: giesing
+    path: "../book.giesing-gschichten"
+    task: >
+      Write story #2 ('Der Nockerberg') using the improved ArcheFlow artifact
+      routing and Colette voice validation. Target 3000 words, Giesing voice
+      profile, include local landmarks and dialect color.
+    workflow: kurzgeschichte
+    domain: writing
+    depends_on: [archeflow, colette]
+
+budget:
+  total_usd: 15.00
+  per_project_usd: 8.00
+
+parallel: true