docs: concept annexation, provider/reference docs, ACT-1 groundwork

Mosaic concepts pages now own the adapted content; source/license
metadata under docs/reference/concepts. Adds ACT-1 agent-context
planning capture, pinned concept test package + preparation utility,
foundation observation notes (durability, evidence, federation,
onboarding, workflow), and the #1495 consolidation assessment.
TOOLS.md updated for the host-dev launcher.

docs/reference/templates/TOOLS.md

@@ -0,0 +1,14 @@
+---
+summary: "Retired TOOLS.md workspace template"
+title: "TOOLS.md retired"
+read_when:
+  - Bootstrapping a workspace manually
+---
+
+# TOOLS.md is retired
+
+Local tool and environment notes now live in the `## Tools` section of `AGENTS.md`. Skills continue to define how tools work.
+
+Run `openclaw doctor --fix` to archive an existing workspace `TOOLS.md`, merge customized content into `AGENTS.md`, and remove the retired file.
+
+See the [AGENTS.md template](/reference/templates/AGENTS) and [agent workspace guide](/concepts/agent-workspace).