feat(agent): make ingestion preparation reproducible

README.md

@@ -1,6 +1,6 @@
 # GEWU local research-agent pack
 
-Version 0.20.0. Adds proposal grouping by semantic learning and guards against placeholder proposal probes and unnecessary schema reads. Includes explicit shared-scope requirements, agent-side duplicate checks, compact extraction reads and per-source budget checkpoints. Disposable service/evidence and Jev label probes passed. Antigravity Flash Low authenticated and captured/extracted one PDF, but the client did not complete a valid learning proposal during the bounded pilot.
+Version 0.20.6. Adds proposal grouping by semantic learning, guards against placeholder proposal probes, provides server-side canonical digest preparation, and stores compact run pins in the installation receipt. Includes explicit shared-scope requirements, agent-side duplicate checks, bounded citation reads and per-source budget checkpoints. Client-pilot findings now feed the checkpoint and citation protocols.
 
 This pack contains the [agent profile](AGENTS.md), Claude harness pointer ([CLAUDE.md](CLAUDE.md)), shared protocols, four skills and separate pipeline procedures. An existing local host supplies the model and tools. There is no standalone agent engine here.
 
@@ -21,7 +21,7 @@ The pack supports Claude through the [CLAUDE.md](CLAUDE.md) harness pointer. Whe
 
 1. **Instruction discovery:** Use the marked root routing block to load the canonical profile in `.agents/gewu/AGENTS.md`, its shared protocols, and applicable `kb-*` skills.
 2. **MCP integration:** Configure the host's project MCP entry for the authenticated Streamable HTTP endpoint, normally `<service-url>/mcp`. Native host setup is not yet qualified.
-3. **Execution model:** Compare discovered tools and schemas with `contracts/service-v1.json`, then use declared MCP operations such as `search`, `source_capture_url`, `source_capture_text`, `proposal_evaluate`, `proposal_submit` and `proposal_status`. There are no generic `query` or `propose` tools.
+3. **Execution model:** Use MCP discovery for the current tool list and argument schemas, then call declared operations such as `search`, `source_capture_url`, `source_capture_text`, `proposal_prepare`, `proposal_evaluate`, `proposal_submit` and `proposal_status`. Consult the pinned contract only to diagnose a concrete missing-tool or schema mismatch. There are no generic `query` or `propose` tools.
 
 ## Setting up a project directory