refactor: extract Evidence DSL to @arbiter/evidence-dsl package

The Evidence DSL (ADR-000) compiles a natural DSL into core rule
configurations — it is a separate concern from the engine. The AST had
zero runtime coupling to the core (DSLCompiler takes the arbiter as a
duck-typed argument; ip-utils were the only shared code, now local to
the DSL package). This extraction removes the DSL surface from the core
artifact entirely:

- src/ast/ (748K, ~60 files) moved to @arbiter/evidence-dsl@1.0.0
- ip-utils moved with it (only the DSL consumed them)
- generate-parser script + peggy devDep moved to the DSL package
- the 8 DSL-consuming tests now import from @arbiter/evidence-dsl
  (deep-path exports: DSLCompiler, parser/*, generator/*, validation/*,
  interpreter/*)
- package.json gains the devDependency, drops build:ast/generate:parser

Tarball: AST-free. Rigor 251/251, full suite 838/776/0.

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "@arbiter/core",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@arbiter/core",
-      "version": "1.0.0",
+      "version": "1.0.1",
       "license": "ISC",
       "dependencies": {
         "@tenere/pltc-core": "^0.6.3",
@@ -14,21 +14,32 @@
         "uuidv7": "^1.0.2"
       },
       "devDependencies": {
+        "@arbiter/evidence-dsl": "^1.0.0",
         "@rigor/core": "*",
         "@tenere/benchmark-lib": "^2.0.1",
-        "fast-check": "^4.5.3",
-        "peggy": "^5.0.6"
+        "fast-check": "^4.5.3"
       }
     },
-    "node_modules/@peggyjs/from-mem": {
-      "version": "3.1.3",
+    "node_modules/@arbiter/core": {
+      "version": "1.0.1",
+      "resolved": "https://hub.kl1.tenere.ai/api/packages/Arbiter/npm/%40arbiter%2Fcore/-/1.0.1/core-1.0.1.tgz",
+      "integrity": "sha512-BfIv6vRKsuJR39WBkBGxl2PQ/LDoW/J1u4UeFrog0AbeTSTvRqhxG1+its2pAcUvcQXq99ZOccFlK3XgNRKt4Q==",
       "dev": true,
-      "license": "MIT",
+      "license": "ISC",
       "dependencies": {
-        "semver": "7.7.4"
-      },
-      "engines": {
-        "node": ">=20.8"
+        "@tenere/pltc-core": "^0.6.3",
+        "heapify": "^1.0.2",
+        "uuidv7": "^1.0.2"
+      }
+    },
+    "node_modules/@arbiter/evidence-dsl": {
+      "version": "1.0.0",
+      "resolved": "https://hub.kl1.tenere.ai/api/packages/Arbiter/npm/%40arbiter%2Fevidence-dsl/-/1.0.0/evidence-dsl-1.0.0.tgz",
+      "integrity": "sha512-v28SkNfcR60rJkDG6Btp5ieYaHQQZEiIJshsyGZYJiTt+V2bGbEj8341PUSzaSE5vRL2mVmRWKT9RoDHQXnzWg==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "@arbiter/core": "^1.0.1"
       }
     },
     "node_modules/@rigor/analysis": {
@@ -332,14 +343,6 @@
         "@tenere/graph-core": "^1.0.1"
       }
     },
-    "node_modules/commander": {
-      "version": "14.0.3",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=20"
-      }
-    },
     "node_modules/fast-check": {
       "version": "4.9.0",
       "dev": true,
@@ -365,22 +368,6 @@
       "version": "1.0.2",
       "license": "MIT"
     },
-    "node_modules/peggy": {
-      "version": "5.1.0",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "@peggyjs/from-mem": "3.1.3",
-        "commander": "^14.0.3",
-        "source-map-generator": "2.0.6"
-      },
-      "bin": {
-        "peggy": "bin/peggy.js"
-      },
-      "engines": {
-        "node": ">=20"
-      }
-    },
     "node_modules/pure-rand": {
       "version": "8.4.2",
       "dev": true,
@@ -396,25 +383,6 @@
       ],
       "license": "MIT"
     },
-    "node_modules/semver": {
-      "version": "7.7.4",
-      "dev": true,
-      "license": "ISC",
-      "bin": {
-        "semver": "bin/semver.js"
-      },
-      "engines": {
-        "node": ">=10"
-      }
-    },
-    "node_modules/source-map-generator": {
-      "version": "2.0.6",
-      "dev": true,
-      "license": "BSD-3-Clause",
-      "engines": {
-        "node": ">=20"
-      }
-    },
     "node_modules/uuidv7": {
       "version": "1.2.1",
       "license": "Apache-2.0",