Merge selfhosting-dev into main (Core-13 pure CI/tests + LLVM bridge) (#126)

* WIP: sync before merging origin/main

* fix: unify using/module + build CLI; add missing helper in runner; build passes; core smokes green; jit any.len string now returns 3

* Apply local changes after merging main; keep docs/phase-15 removed per main; add phase-15.1 docs and tests

* Remove legacy docs/phase-15/README.md to align with main

* integration: add Core-13 pure CI, tests, and minimal LLVM execute bridge (no docs) (#125)

Co-authored-by: Tomoaki <tomoaki@example.com>

---------

Co-authored-by: Selfhosting Dev <selfhost@example.invalid>
Co-authored-by: Tomoaki <tomoaki@example.com>

apps/ny-parser-nyash/main.nyash

@@ -1,6 +1,6 @@
 // Entry: read stdin, parse with ParserV0, print JSON IR or error JSON
 
-include("./apps/ny-parser-nyash/parser_minimal.nyash")
+include "./apps/ny-parser-nyash/parser_minimal.nyash"
 
 static box Main {
   main(args) {
@@ -26,4 +26,3 @@ static box Main {
     return 0
   }
 }
-

apps/ny-parser-nyash/parser_minimal.nyash

@@ -1,6 +1,6 @@
 // Minimal recursive-descent parser for Ny v0 producing JSON IR v0 (MapBox)
 
-include("./apps/ny-parser-nyash/tokenizer.nyash")
+include "./apps/ny-parser-nyash/tokenizer.nyash"
 
 static box ParserV0 {
     init { tokens, pos }
@@ -85,4 +85,3 @@ static box ParserV0 {
         return err
     }
 }
-

apps/smokes/jit_direct_array_mut.nyash

@@ -0,0 +1,6 @@
+// Expect: JIT-direct read_only policy denies mutating hostcalls (push)
+return (fn(){
+    local a = new ArrayBox()
+    a.push(1)
+    return a.length()
+})()

apps/smokes/json_v0_short_and.json

@@ -0,0 +1,21 @@
+{
+  "version": 0,
+  "kind": "Program",
+  "body": [
+    {
+      "type": "Return",
+      "expr": {
+        "type": "Logical",
+        "op": "&&",
+        "lhs": { "type": "Bool", "value": false },
+        "rhs": {
+          "type": "Compare",
+          "op": "==",
+          "lhs": { "type": "Binary", "op": "/", "lhs": { "type": "Int", "value": 1 }, "rhs": { "type": "Int", "value": 0 } },
+          "rhs": { "type": "Int", "value": 1 }
+        }
+      }
+    }
+  ]
+}
+

apps/smokes/json_v0_short_or.json

@@ -0,0 +1,21 @@
+{
+  "version": 0,
+  "kind": "Program",
+  "body": [
+    {
+      "type": "Return",
+      "expr": {
+        "type": "Logical",
+        "op": "||",
+        "lhs": { "type": "Bool", "value": true },
+        "rhs": {
+          "type": "Compare",
+          "op": "==",
+          "lhs": { "type": "Binary", "op": "/", "lhs": { "type": "Int", "value": 1 }, "rhs": { "type": "Int", "value": 0 } },
+          "rhs": { "type": "Int", "value": 1 }
+        }
+      }
+    }
+  ]
+}
+