release: prepare v0.2.1

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: leifericf

CHANGES.md

@@ -2,6 +2,48 @@
 
 All notable changes to Noumenon are documented in this file.
 
+## 0.2.1
+
+### Features
+
+- **Artifact storage** — Prompts, named queries, and Datalog rules are now stored
+  in Datomic with full edit history. `reseed` command reloads from classpath.
+  `artifact-history` command shows change history per artifact.
+
+### Fixes
+
+- **Security** — Cap introspect `max_iterations` (100) and `eval_runs` (10) to
+  prevent unbounded LLM calls. Validate `target` parameter length. Anchor
+  `validate-code-path!` to project root instead of JVM CWD.
+- **NPE on update --analyze** — `sync/update-repo!` now passes `meta-db` through
+  to `analyze-repo!`, fixing a NullPointerException introduced in 0.2.0.
+- **Chunked prompt history** — `prompt-history` now tracks both template and chunk
+  transactions, fixing empty results for prompts over 4000 chars.
+- **Introspect git commits** — `git-commit-improvement!` checks exit codes from
+  `git add` and `git commit` instead of silently discarding failures.
+- **Agent query rules** — `dispatch-query` errors clearly when a query requires
+  rules (`%`) but rules are not loaded, instead of silently running without them.
+- **MCP artifact-history** — Validates that `name` is required for prompt history.
+- **Introspect persistence** — Iterations saved incrementally; large modifications
+  truncated before Datomic storage.
+- **Artifact staleness** — Fixed stale data on prompt chunking transitions and
+  query list regression.
+
+### CLI / MCP UX
+
+- Registered `reseed` and `artifact-history` as CLI subcommands (previously
+  unreachable).
+- Corrected `--target` default documentation (all targets, not just examples).
+- Added `noumenon_introspect`, `noumenon_reseed`, and `noumenon_artifact_history`
+  to README command reference.
+- Improved MCP feedback: empty query list hints at reseeding, `introspect_stop`
+  reports actual session status, `ask` no longer exposes internal status keywords.
+- Batch CLI help improvements: `--reanalyze` default hint, `--continue-from`
+  placement guidance, benchmark mode in pre-run log, `[COST WARNING]` and
+  `[CANARY WARNING]` prefixes standardized.
+
+---
+
 ## 0.2.0
 
 ### Features

README.md

@@ -36,22 +36,22 @@ clj -M:run --help
 Download the latest JAR from [GitHub Releases](https://github.com/leifericf/noumenon/releases):
 
 ```bash
-java -jar noumenon-0.2.0.jar --help
+java -jar noumenon-0.2.1.jar --help
 ```
 
 Build from source if needed:
 
 ```bash
 clj -T:build uber
-java -jar target/noumenon-0.2.0.jar --version
+java -jar target/noumenon-0.2.1.jar --version
 ```
 
 ### Option 3: Use as a Clojure dependency
 
 ```clojure
 {:aliases
  {:noumenon
-  {:extra-deps {io.github.leifericf/noumenon {:git/tag "v0.2.0" :git/sha "81fc309"}}
+  {:extra-deps {io.github.leifericf/noumenon {:git/tag "v0.2.1" :git/sha "2782dd1"}}
    :main-opts ["-m" "noumenon.main"]}}}
 ```
 
@@ -260,7 +260,7 @@ Run Noumenon as an [MCP](https://modelcontextprotocol.io) server so agents can c
 
 ```bash
 clj -M:run serve
-# or java -jar noumenon-0.2.0.jar serve
+# or java -jar noumenon-0.2.1.jar serve
 ```
 
 ### [Claude Desktop](https://claude.ai/download) config
@@ -272,7 +272,7 @@ Add to `~/Library/Application Support/Claude/claude_desktop_config.json`:
   "mcpServers": {
     "noumenon": {
       "command": "java",
-      "args": ["-jar", "/path/to/noumenon-0.2.0.jar", "serve"]
+      "args": ["-jar", "/path/to/noumenon-0.2.1.jar", "serve"]
     }
   }
 }

resources/version.edn

@@ -1 +1 @@
-{:version "0.2.0"}
+{:version "0.2.1"}