fix: missing minisweagent_path module + add nix checks

- Patch upstream pyproject.toml to include minisweagent_path in py-modules
- Copy mini-swe-agent/src/minisweagent into package for importability
- Add 3 nix checks: package-contents, cli-commands, doctor
- All binaries tested: hermes, hermes-agent, hermes-acp
- hermes gateway, config, status, claw migrate all verified working

checks.nix

@@ -0,0 +1,76 @@
+{ pkgs, hermes-agent }:
+
+{
+  # Verify package contents — binaries exist and are executable
+  package-contents = pkgs.runCommand "hermes-package-contents" { } ''
+    set -e
+
+    echo "=== Checking binaries ==="
+    test -x ${hermes-agent}/bin/hermes || (echo "FAIL: hermes binary missing"; exit 1)
+    test -x ${hermes-agent}/bin/hermes-agent || (echo "FAIL: hermes-agent binary missing"; exit 1)
+    test -x ${hermes-agent}/bin/hermes-acp || (echo "FAIL: hermes-acp binary missing"; exit 1)
+    echo "PASS: All binaries present"
+
+    echo "=== Checking version ==="
+    ${hermes-agent}/bin/hermes version 2>&1 | grep -q "Hermes Agent" || (echo "FAIL: version check"; exit 1)
+    echo "PASS: Version check"
+
+    echo "=== Checking key Python modules ==="
+    SITE=${hermes-agent}/lib/python3.12/site-packages
+    for mod in agent cli.py gateway cron tools run_agent.py model_tools.py minisweagent_path.py acp_adapter honcho_integration; do
+      if [ ! -e "$SITE/$mod" ] && [ ! -e "$SITE/$mod.py" ]; then
+        echo "FAIL: Missing module $mod"
+        exit 1
+      fi
+    done
+    echo "PASS: All key modules present"
+
+    echo "=== Checking wrapped PATH includes runtime deps ==="
+    cat ${hermes-agent}/bin/hermes | grep -q "PATH" || (echo "FAIL: hermes not wrapped with PATH"; exit 1)
+    echo "PASS: PATH wrapping"
+
+    echo "=== All checks passed ==="
+    mkdir -p $out
+    echo "ok" > $out/result
+  '';
+
+  # Verify hermes CLI subcommands are accessible
+  cli-commands = pkgs.runCommand "hermes-cli-commands" { } ''
+    set -e
+    export HOME=$(mktemp -d)
+
+    echo "=== Checking hermes --help ==="
+    ${hermes-agent}/bin/hermes --help 2>&1 | grep -q "gateway" || (echo "FAIL: gateway subcommand missing"; exit 1)
+    ${hermes-agent}/bin/hermes --help 2>&1 | grep -q "claw" || (echo "FAIL: claw subcommand missing"; exit 1)
+    ${hermes-agent}/bin/hermes --help 2>&1 | grep -q "config" || (echo "FAIL: config subcommand missing"; exit 1)
+    ${hermes-agent}/bin/hermes --help 2>&1 | grep -q "cron" || (echo "FAIL: cron subcommand missing"; exit 1)
+    ${hermes-agent}/bin/hermes --help 2>&1 | grep -q "skills" || (echo "FAIL: skills subcommand missing"; exit 1)
+    ${hermes-agent}/bin/hermes --help 2>&1 | grep -q "acp" || (echo "FAIL: acp subcommand missing"; exit 1)
+    echo "PASS: All subcommands accessible"
+
+    echo "=== Checking hermes config ==="
+    ${hermes-agent}/bin/hermes config 2>&1 | grep -q "Config:" || (echo "FAIL: config output"; exit 1)
+    echo "PASS: Config command"
+
+    echo "=== Checking hermes claw migrate --help ==="
+    ${hermes-agent}/bin/hermes claw migrate --help 2>&1 | grep -q "OpenClaw" || (echo "FAIL: claw migrate"; exit 1)
+    echo "PASS: Claw migrate"
+
+    echo "=== All CLI checks passed ==="
+    mkdir -p $out
+    echo "ok" > $out/result
+  '';
+
+  # Verify doctor runs without crashing
+  doctor = pkgs.runCommand "hermes-doctor" { } ''
+    set -e
+    export HOME=$(mktemp -d)
+
+    echo "=== Running hermes doctor ==="
+    ${hermes-agent}/bin/hermes doctor 2>&1 | grep -q "Python" || (echo "FAIL: doctor"; exit 1)
+    echo "PASS: Doctor runs successfully"
+
+    mkdir -p $out
+    echo "ok" > $out/result
+  '';
+}