chore: add graph explorer make target

workplans/ADHOC-2026-06-03.md

@@ -0,0 +1,44 @@
+---
+id: ADHOC-2026-06-03
+type: workplan
+title: "Ad Hoc Fixes 2026-06-03"
+domain: railiance
+repo: railiance-fabric
+status: finished
+owner: codex
+topic_slug: railiance
+created: "2026-06-03"
+updated: "2026-06-03"
+---
+
+# ADHOC-2026-06-03 - Ad Hoc Fixes
+
+## Add Graph Explorer Make Target
+
+```task
+id: ADHOC-2026-06-03-T01
+status: done
+priority: medium
+```
+
+The graph explorer is served by the registry HTTP service, but starting it
+currently requires remembering the full registry command and database path.
+
+Add a Makefile target that starts the registry-backed graph explorer from the
+repo root with defaults for the local database, host, and port. Calling `make`
+without an explicit target should list available targets rather than start a
+long-running service. Document the target and available overrides.
+
+Result: Added `make graph-explorer`, with `registry` as an alias, defaulting to
+`.railiance-fabric/registry.sqlite3`, `127.0.0.1`, and port `8765`. Plain
+`make` now prints the available targets instead of starting the service. The
+target uses `python3 -m railiance_fabric.server`, so it works from the checkout
+without requiring an installed console script. Updated the README and graph
+explorer operations guide with the target and override examples.
+
+Verification:
+
+- Confirmed plain `make` lists available targets.
+- Started `make graph-explorer PORT=9877 REGISTRY_DB=/tmp/railiance-fabric-make-test.sqlite3`.
+- Confirmed `GET http://127.0.0.1:9877/status` returned `status: ok`.
+- Stopped the temporary verification server on port `9877`.