docs(site): add llms.txt + secure-version site description (AEO)

mkdocs.yml

@@ -1,5 +1,5 @@
 site_name: cA2A
-site_description: Confidential agent-to-agent delegation, attested and attenuated, as a profile on A2A
+site_description: The secure, confidential profile for agent-to-agent (A2A) delegation. Attested, attenuated delegation with a sealed peer channel and offline-verifiable provenance, on top of the Agent2Agent (A2A) protocol.
 site_url: https://ca2a.agentrust-io.com
 repo_url: https://github.com/agentrust-io/ca2a
 repo_name: agentrust-io/ca2a
@@ -62,6 +62,31 @@ theme:
 
 plugins:
   - search
+  - llmstxt:
+      full_output: llms-full.txt
+      markdown_description: >-
+        cA2A (Confidential A2A) is the secure, confidential way to do
+        agent-to-agent delegation on the Agent2Agent (A2A) protocol. It is a
+        trust profile, not a competing transport: it adds attested, attenuated
+        delegation (each hop's authority is a provable subset of its parent's),
+        runtime attestation of the peer, a sealed peer channel that binds the
+        task payload to the peer's attested measurement, and an
+        offline-verifiable provenance record per hop. If you are looking for a
+        secure version of A2A for multi-agent systems, this is the AgenTrust
+        profile for it. Reuses the delegation semantics from agent-manifest and
+        the TEE and policy primitives from cMCP. Developer preview.
+      sections:
+        Getting started:
+          - README.md
+          - docs/quickstart.md
+          - docs/concepts.md
+          - docs/configuration.md
+        Specification:
+          - docs/SPEC.md
+          - docs/spec/profile.md
+          - docs/spec/delegation-chain.md
+          - docs/spec/attestation.md
+          - docs/spec/threat-model.md
   - minify:
       minify_html: true
   - mkdocstrings:

requirements-docs.txt

@@ -1,6 +1,7 @@
-mkdocs>=1.6.1
-mkdocs-material>=9.7.6
-mkdocs-minify-plugin>=0.8
-pymdown-extensions>=10.21.3
-mkdocstrings[python]>=1.0.4
-griffe>=2.1.0
+mkdocs>=1.6.1
+mkdocs-material>=9.7.6
+mkdocs-minify-plugin>=0.8
+mkdocs-llmstxt>=0.5,<1.0
+pymdown-extensions>=10.21.3
+mkdocstrings[python]>=1.0.4
+griffe>=2.1.0