Phase 22.1 WIP: SSOT resolver + TLV infrastructure + Hako MIR builder setup

Setup infrastructure for Phase 22.1 (TLV C shim & Resolver SSOT):

Core changes:
- Add nyash_tlv, nyash_c_core, nyash_kernel_min_c crates (opt-in)
- Implement SSOT resolver bridge (src/using/ssot_bridge.rs)
- Add HAKO_USING_SSOT=1 / HAKO_USING_SSOT_HAKO=1 env support
- Add HAKO_TLV_SHIM=1 infrastructure (requires --features tlv-shim)

MIR builder improvements:
- Fix using/alias consistency in Hako MIR builder
- Add hako.mir.builder.internal.{prog_scan,pattern_util} to nyash.toml
- Normalize LLVM extern calls: nyash.console.* → nyash_console_*

Smoke tests:
- Add phase2211 tests (using_ssot_hako_parity_canary_vm.sh)
- Add phase2220, phase2230, phase2231 test structure
- Add phase2100 S3 backend selector tests
- Improve test_runner.sh with quiet/timeout controls

Documentation:
- Add docs/ENV_VARS.md (Phase 22.1 env vars reference)
- Add docs/development/runtime/C_CORE_ABI.md
- Update de-rust-roadmap.md with Phase 22.x details

Tools:
- Add tools/hakorune_emit_mir.sh (Hako-first MIR emission wrapper)
- Add tools/tlv_roundtrip_smoke.sh placeholder
- Improve ny_mir_builder.sh with better backend selection

Known issues (to be fixed):
- Parser infinite loop in static method parameter parsing
- Stage-B output contamination with "RC: 0" (needs NYASH_JSON_ONLY=1)
- phase2211/using_ssot_hako_parity_canary_vm.sh fork bomb (needs recursion guard)

Next steps: Fix parser infinite loop + Stage-B quiet mode for green tests

tools/ny_mir_builder.sh

@@ -24,6 +24,7 @@ TARGET=""
 NYRT_DIR=""
 VERIFY=0
 QUIET=0
+BACKEND="${NYASH_LLVM_BACKEND:-llvmlite}"  # llvmlite | crate | native (reserved)
 
 while [[ $# -gt 0 ]]; do
   case "$1" in
@@ -68,6 +69,10 @@ if [[ "$SKIP_BUILD" != "1" ]]; then
   else
     timeout "$BUILD_TIMEOUT" cargo build --release -j 24 --features "${LLVM_FEATURE}" >/dev/null
   fi
+  # Prebuild ny-llvmc when using crate backend
+  if [[ "$BACKEND" == "crate" ]]; then
+    (cd "$(dirname "$0")/.." && timeout "$BUILD_TIMEOUT" cargo build --release -j 24 -p nyash-llvm-compiler >/dev/null) || true
+  fi
   if [[ "$EMIT" == "exe" ]]; then
     (cd crates/nyrt && timeout "$BUILD_TIMEOUT" cargo build --release -j 24 >/dev/null)
   fi
@@ -112,11 +117,23 @@ case "$EMIT" in
     [[ "$QUIET" == "0" ]] && echo "OK ll:$OUT"
     ;;
   obj)
-    # Directly use llvmlite harness with MIR v1 JSON input
-    rm -f "$OUT"
-    if ! python3 "$PWD/tools/llvmlite_harness.py" --in "$IN_FILE" --out "$OUT" >/dev/null 2>&1; then
-      echo "error: harness failed to produce $OUT" >&2; exit 4
-    fi
+    case "$BACKEND" in
+      crate)
+        BIN_NYLLVMC="./target/release/ny-llvmc"
+        if [[ ! -x "$BIN_NYLLVMC" ]]; then
+          echo "error: ny-llvmc not found (cargo build -p nyash-llvm-compiler)" >&2; exit 4
+        fi
+        rm -f "$OUT"
+        "$BIN_NYLLVMC" --in "$IN_FILE" --emit obj --out "$OUT" >/dev/null 2>&1 || { echo "error: ny-llvmc failed" >&2; exit 4; }
+        ;;
+      llvmlite|*)
+        # Directly use llvmlite harness with MIR v1 JSON input
+        rm -f "$OUT"
+        if ! python3 "$PWD/tools/llvmlite_harness.py" --in "$IN_FILE" --out "$OUT" >/dev/null 2>&1; then
+          echo "error: harness failed to produce $OUT" >&2; exit 4
+        fi
+        ;;
+    esac
     if [[ ! -f "$OUT" ]]; then echo "error: failed to produce $OUT" >&2; exit 4; fi
     [[ "$QUIET" == "0" ]] && echo "OK obj:$OUT"
     ;;
@@ -124,17 +141,32 @@ case "$EMIT" in
     # Emit obj then link
     OBJ="$PWD/target/aot_objects/__tmp_builder.o"
     rm -f "$OBJ"
-    if ! python3 "$PWD/tools/llvmlite_harness.py" --in "$IN_FILE" --out "$OBJ" >/dev/null 2>&1; then
-      echo "error: harness failed to produce object $OBJ" >&2; exit 4
-    fi
-    if [[ ! -f "$OBJ" ]]; then echo "error: failed to produce object $OBJ" >&2; exit 4; fi
-    # Link with NyRT
-    NYRT_BASE=${NYRT_DIR:-"$PWD/crates/nyash_kernel"}
-    cc "$OBJ" \
-      -L target/release \
-      -L "$NYRT_BASE/target/release" \
-      -Wl,--whole-archive -lnyash_kernel -Wl,--no-whole-archive \
-      -lpthread -ldl -lm -o "$OUT"
+    case "$BACKEND" in
+      crate)
+        BIN_NYLLVMC="./target/release/ny-llvmc"
+        if [[ ! -x "$BIN_NYLLVMC" ]]; then
+          echo "error: ny-llvmc not found (cargo build -p nyash-llvm-compiler)" >&2; exit 4
+        fi
+        # Produce exe directly via ny-llvmc (lets ny-llvmc link)
+        LIBS="${HAKO_AOT_LDFLAGS:-}"
+        if ! "$BIN_NYLLVMC" --in "$IN_FILE" --emit exe --nyrt target/release --libs "$LIBS" --out "$OUT" >/dev/null 2>&1; then
+          echo "error: ny-llvmc failed to link exe" >&2; exit 4
+        fi
+        ;;
+      llvmlite|*)
+        if ! python3 "$PWD/tools/llvmlite_harness.py" --in "$IN_FILE" --out "$OBJ" >/dev/null 2>&1; then
+          echo "error: harness failed to produce object $OBJ" >&2; exit 4
+        fi
+        if [[ ! -f "$OBJ" ]]; then echo "error: failed to produce object $OBJ" >&2; exit 4; fi
+        # Link with NyRT
+        NYRT_BASE=${NYRT_DIR:-"$PWD/crates/nyash_kernel"}
+        cc "$OBJ" \
+          -L target/release \
+          -L "$NYRT_BASE/target/release" \
+          -Wl,--whole-archive -lnyash_kernel -Wl,--no-whole-archive \
+          -lpthread -ldl -lm -o "$OUT"
+        ;;
+    esac
     [[ "$QUIET" == "0" ]] && echo "OK exe:$OUT"
     ;;
   *) echo "error: invalid emit kind: $EMIT" >&2; exit 2 ;;