diff --git a/CMakeLists.txt b/CMakeLists.txt
index df56684..5abb9c3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,17 +11,19 @@ option(VMIE_LTO "Enable LTO" OFF)      # build-only; shipped default is -O2, no
 add_library(vmie STATIC
         src/core/gpa.c
         src/engine/gva.c
-        src/engine/host.c
-        src/engine/pe.c
-        src/engine/proc.c
-        src/engine/profile.c
-        src/engine/text.c
+        src/engine/sigphys.c
+        src/engine/win32/host.c
+        src/engine/win32/pe.c
+        src/engine/win32/proc.c
+        src/engine/win32/profile.c
+        src/engine/win32/text.c
         src/handlers/scan.c
         src/handlers/sigscan.c)
 target_include_directories(vmie
         PUBLIC  ${CMAKE_CURRENT_SOURCE_DIR}/include              # public API: include/*.h
         PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/src/core/include     # private: core.h
-                ${CMAKE_CURRENT_SOURCE_DIR}/src/engine/include)  # private: engine.h, contract.h
+                ${CMAKE_CURRENT_SOURCE_DIR}/src/engine/include   # private: engine-arch.h, pe.h
+                ${CMAKE_CURRENT_SOURCE_DIR}/src/engine/win32)    # private: engine-win32.h, contract.h
 target_compile_options(vmie PRIVATE -O2 -Wall -Wextra)
 if(VMIE_LTO)
     target_compile_options(vmie PRIVATE -flto)
@@ -39,10 +41,10 @@ set(VMIE_STARTUP ${CMAKE_CURRENT_BINARY_DIR}/vmie-startup.exe)
 add_custom_command(
         OUTPUT  ${VMIE_STARTUP}
         COMMAND ${MINGW_CC} -O2 -Wall -Wextra -static -s
-                -I${CMAKE_CURRENT_SOURCE_DIR}/src/engine/include
-                -o ${VMIE_STARTUP} ${CMAKE_CURRENT_SOURCE_DIR}/src/engine/guest.c
-        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/src/engine/guest.c
-                ${CMAKE_CURRENT_SOURCE_DIR}/src/engine/include/contract.h
+                -I${CMAKE_CURRENT_SOURCE_DIR}/src/engine/win32
+                -o ${VMIE_STARTUP} ${CMAKE_CURRENT_SOURCE_DIR}/src/engine/win32/guest.c
+        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/src/engine/win32/guest.c
+                ${CMAKE_CURRENT_SOURCE_DIR}/src/engine/win32/contract.h
         COMMENT "Cross-compiling vmie-startup.exe (mingw-w64, x86-64)"
         VERBATIM)
 add_custom_target(vmie-startup ALL DEPENDS ${VMIE_STARTUP})
diff --git a/include/memmodel.h b/include/memmodel.h
index 7a2d142..6bc6512 100644
--- a/include/memmodel.h
+++ b/include/memmodel.h
@@ -27,6 +27,40 @@
  * pass it, with a cr3, to the address-space primitives below. */
 typedef struct vmie_mem vmie_mem;
 
+/* One contiguous GPA window backed by a file span: GPA [gpa, gpa+len) maps 1:1
+ * onto file offset [file_off, file_off+len). A POD descriptor, promoted here so
+ * an explicit-segment dump can be opened through the public surface below; the
+ * full vmie_mem (which embeds an array of these) is defined in core.h. */
+#ifndef VMIE_GPA_SEG_DEFINED
+#define VMIE_GPA_SEG_DEFINED
+typedef struct gpa_seg {
+    uint64_t gpa;
+    uint64_t len;
+    uint64_t file_off;
+} gpa_seg;
+#endif
+
+/* ---- dump source lifecycle ----------------------------------------------- *
+ * A vmie_mem is the universal memory source: a live win32 physical image and an
+ * on-disk dump are both vmie_mem. These open a dump (or any flat/segmented RAM
+ * image) as a heap-owned vmie_mem for the source-agnostic physical scanners
+ * (scan.h: sig_scan_mem/sig_scan_sources). No paging/cr3: a dump supports the
+ * physical signature scan only. The win32 engine produces its vmie_mem through
+ * the win32 surface (win32.h) instead. */
+
+/* Open `path` as a single-`low` image (the classic QEMU split; low >= file size
+ * => one inert identity segment, i.e. a flat dump). Returns a heap-owned handle,
+ * or NULL on open/mmap failure. Release with vmie_mem_close(). */
+vmie_mem* vmie_mem_open(const char* path, uint64_t low);
+
+/* Open `path` with an explicit segment map (`nseg` entries; see gpa_seg). The
+ * map must be well-formed against the file size (dense, sorted, in-file).
+ * Returns a heap-owned handle, or NULL on failure. Release with vmie_mem_close(). */
+vmie_mem* vmie_mem_open_segs(const char* path, const gpa_seg* segs, int nseg);
+
+/* Unmap, close, and free a handle from vmie_mem_open*. Safe on NULL. */
+void      vmie_mem_close(vmie_mem* m);
+
 /* ---- flat memory view (single owner) ------------------------------------- *
  * A contiguous view of memory.
  *   data    - host pointer to the bytes (borrowed; not owned by the view)
diff --git a/include/scan.h b/include/scan.h
index 68ae0bc..ffd56d9 100644
--- a/include/scan.h
+++ b/include/scan.h
@@ -9,7 +9,7 @@
  * memory and feed them to the signature matcher.
  *
  * The Windows-typed convenience entry points (scan_new(process*),
- * vmie_scan_pointer(process*)) live in the win32 surface (vmie.h).
+ * vmie_scan_pointer(process*)) live in the win32 surface (win32.h).
  */
 #ifndef VMIE_SCAN_H
 #define VMIE_SCAN_H
@@ -61,7 +61,23 @@ int gva_sig_first(vmie_mem* m, uintptr_t cr3, uint64_t lo, uint64_t hi,
 int gva_sig_rip  (vmie_mem* m, uintptr_t cr3, uint64_t hit_va,
                   size_t disp_off, size_t instr_len, uint64_t* target);
 
-/* gva_sig_phys (scan the raw physical image) needs the core segment map, so it
- * is an engine bridge, declared in engine.h - not part of the handler surface. */
+/* ---- physical-image signature scan (OS-agnostic engine bridge) ----------- *
+ * Scan the raw physical image (the core segment map) for a signature, without a
+ * cr3 or page tables: each seg is one mem_view_t over its file span, fed to the
+ * pure matcher. This is the dump path - a dump (vmie_mem_open*) supports the
+ * physical scan only. Keyed by vmie_mem*, like the rest of this header. */
+
+/* Attributed hit from a multi-source scan: which source matched, and where. */
+typedef struct { int source; uint64_t gpa; } sig_hit_src;
+
+/* Scan one physical image for `p`. Writes up to `max` GPA hits to `out` (NULL to
+ * count only) and returns the TOTAL number of hits, or -1 on a bad pattern. */
+int sig_scan_mem    (vmie_mem* m, const sig_pattern_t* p, uint64_t* out, int max);
+
+/* Scan `nsrc` physical images for `p`, tagging each hit with its source index.
+ * Writes up to `max` attributed hits to `out` (NULL to count only) and returns
+ * the TOTAL across all sources, or -1 on a bad pattern. */
+int sig_scan_sources(vmie_mem* const* srcs, int nsrc, const sig_pattern_t* p,
+                     sig_hit_src* out, int max);
 
 #endif /* VMIE_SCAN_H */
diff --git a/include/sigscan.h b/include/sigscan.h
index 575ca99..3115a37 100644
--- a/include/sigscan.h
+++ b/include/sigscan.h
@@ -36,6 +36,12 @@ bool sig_parse_ida(const char* ida, sig_pattern_t* out);
  * false on NULL args or an empty mask. */
 bool sig_parse_mask(const uint8_t* bytes, const char* mask, sig_pattern_t* out);
 
+/* Build an exact (no-wildcard) pattern from `len` raw bytes: every byte must
+ * match. A thin wrapper over sig_parse_mask with an all-'x' mask, so the result
+ * is released with sig_free() like any other pattern. Returns true on success,
+ * false on NULL args, a zero length, or OOM. Touches no vmie_mem (pure). */
+bool sig_from_bytes(const uint8_t* bytes, size_t len, sig_pattern_t* out);
+
 /* Release a pattern produced by sig_parse_*. Safe on NULL and on an
  * already-freed pattern (it is zeroed). */
 void sig_free(sig_pattern_t* p);
diff --git a/include/vmie.h b/include/win32.h
similarity index 84%
rename from include/vmie.h
rename to include/win32.h
index 4c6617e..cf0faf0 100644
--- a/include/vmie.h
+++ b/include/win32.h
@@ -1,4 +1,4 @@
-/* vmie.h - public Windows-guest surface of the vmi-engine.
+/* win32.h - public Windows-guest surface of the vmi-engine.
  *
  * The host opens a guest's RAM backing file (a flat, writable, coherent mmap),
  * recovers the kernel address space, and reads/writes guest memory by CR3 and
@@ -16,18 +16,18 @@
  *   - The library never takes ownership of caller buffers and never retains a
  *     pointer past the call that received it, unless explicitly stated.
  */
-#ifndef VMIE_VMIE_H
-#define VMIE_VMIE_H
+#ifndef VMIE_WIN32_H
+#define VMIE_WIN32_H
 #include <stdint.h>
 #include <stddef.h>
 #include "memmodel.h"    /* vmie_mem, vregion/VR_*, task/range, gva_read/write/ptr/regions/sweep */
 #include "sigscan.h"     /* mem_view_t, sig_pattern_t */
 #include "scan.h"        /* scan_type, scan_ptr_path, generic scan surface */
 
-/* Opaque introspection context. Completed in src/engine/include/engine.h;
- * callers only ever hold a pointer. Created by vmie_open(), populated by
- * host_bootstrap(), released by vmie_close(). */
-typedef struct vmie vmie;
+/* Opaque introspection context. Completed in src/engine/win32/engine-win32.h;
+ * callers only ever hold a pointer. Created by vmie_win32_open(), populated by
+ * host_bootstrap(), released by vmie_win32_close(). */
+typedef struct vmie_win32 vmie_win32;
 
 /* A guest counted string still resident in guest memory (e.g. a UNICODE_STRING
  * buffer). Not a copy: `va` points into the guest, decode it with gva_read_text.
@@ -80,26 +80,26 @@ typedef struct {
  *              pass the value from the VM's memory layout. If total RAM <= low,
  *              the split is inert.
  * Returns a new context (call host_bootstrap() next), or NULL on open/mmap
- * failure. Free with vmie_close(). */
-vmie* vmie_open(const char* ram_path, uint64_t low);
+ * failure. Free with vmie_win32_close(). */
+vmie_win32* vmie_win32_open(const char* ram_path, uint64_t low);
 
 /* Unmap, close, and free a context. Safe on NULL. After this, every pointer
  * into guest memory obtained through this context is invalid. */
-void vmie_close(vmie* v);
+void vmie_win32_close(vmie_win32* v);
 
 /* Borrow the engine's guest-memory handle for the generic address-space
  * primitives (gva_read/gva_regions/...). The returned pointer is owned by `v`
- * and valid until vmie_close(v); do NOT free or retain it past that. NULL on
+ * and valid until vmie_win32_close(v); do NOT free or retain it past that. NULL on
  * NULL `v`. */
-vmie_mem* vmie_memory(vmie* v);
+vmie_mem* vmie_win32_mem(vmie_win32* v);
 
 /* One-shot bring-up: locate the guest agent beacon in physical RAM, recover a
  * bootstrap CR3, find ntoskrnl, build the struct-offset profile, derive the
  * permanent System DirectoryTableBase (kernel cr3) and System _EPROCESS, then
  * ACK the agent. On success the context is ready for proc_list()/gva_read()/etc.
  * Returns 0 on success, or a negative stage code (-1..-6) identifying the step
- * that failed. Cold path: call once after vmie_open(). */
-int host_bootstrap(vmie* v);
+ * that failed. Cold path: call once after vmie_win32_open(). */
+int host_bootstrap(vmie_win32* v);
 
 /* ---- guest string decode ------------------------------------------------- */
 
@@ -111,7 +111,7 @@ int host_bootstrap(vmie* v);
  * Returns the number of UTF-8 bytes the full conversion needs, EXCLUDING the
  * terminator (like snprintf): if it is >= `size`, output was truncated. When
  * `dst` is non-NULL and `size` > 0 the result is always NUL-terminated. */
-size_t gva_read_text(vmie* v, uintptr_t cr3, uintptr_t va, size_t nmemb, char* dst, size_t size);
+size_t gva_read_text(vmie_win32* v, uintptr_t cr3, uintptr_t va, size_t nmemb, char* dst, size_t size);
 
 /* ---- enumeration --------------------------------------------------------- */
 
@@ -121,14 +121,14 @@ size_t gva_read_text(vmie* v, uintptr_t cr3, uintptr_t va, size_t nmemb, char* d
  *   nmax        - capacity of `dst`
  * Returns the number written (<= nmax), or negative on failure (e.g. bootstrap
  * not completed). Enumeration stops at `nmax`; raise it to see more. */
-int proc_list(vmie* v, int skip_system, process* dst, size_t nmax);
+int proc_list(vmie_win32* v, int skip_system, process* dst, size_t nmax);
 
 /* Enumerate a process's loaded modules via the PEB loader InLoadOrder list.
  *   pr   - process to inspect (uses pr->cr3 and pr->peb)
  *   dst  - caller array receiving up to `nmax` `pmodule` records
  *   nmax - capacity of `dst`
  * Returns the number written (<= nmax), 0 if the process has no PEB/loader. */
-int proc_modules(vmie* v, const process* pr, pmodule* dst, size_t nmax);
+int proc_modules(vmie_win32* v, const process* pr, pmodule* dst, size_t nmax);
 
 /* ---- win32 scan wrappers ------------------------------------------------- *
  * Convenience entry points over the generic cr3/range scan surface (scan.h).
@@ -137,13 +137,13 @@ int proc_modules(vmie* v, const process* pr, pmodule* dst, size_t nmax);
 
 /* Open a value-scan session over the user address space of `pr`. Equivalent to
  * scan_new_cr3(&v->mem, pr->cr3, ...). Returns NULL on NULL pr or OOM. */
-scan* scan_new(vmie* v, const process* pr, scan_type t, const void* value,
+scan* scan_new(vmie_win32* v, const process* pr, scan_type t, const void* value,
                int be, int aligned, uint64_t lo, uint64_t hi);
 
 /* Pointer scan over `pr`'s user space, anchored on its loaded modules. Resolves
  * `pr`'s module list to range[] (names engine-decoded) and delegates to
  * scan_pointer. Returns the number of paths found, or negative on failure. */
-int vmie_scan_pointer(vmie* v, const process* pr, uint64_t target,
+int vmie_scan_pointer(vmie_win32* v, const process* pr, uint64_t target,
                       int max_depth, uint32_t max_off, scan_ptr_path* out, int max);
 
-#endif /* VMIE_VMIE_H */
+#endif /* VMIE_WIN32_H */
diff --git a/src/cli.c b/src/cli.c
index df8307b..f6e0c52 100644
--- a/src/cli.c
+++ b/src/cli.c
@@ -2,8 +2,8 @@
  *
  * Opens a guest RAM backing file, brings up the VMI context, lists processes,
  * and for the first user process dumps its loaded modules and mapped regions.
- * Public surface only (include/vmie.h); the region walk takes a vmie_mem*,
- * borrowed from the engine via vmie_memory().
+ * Public surface only (include/win32.h); the region walk takes a vmie_mem*,
+ * borrowed from the engine via vmie_win32_mem().
  *
  *   argv[1]  path to the guest RAM backing file
  *   argv[2]  `low` - size in bytes of below-4G guest RAM (strtoull, base 0)
@@ -14,7 +14,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <inttypes.h>
-#include "vmie.h"
+#include "win32.h"
 
 #define DEFAULT_NMAX 512
 #define MOD_CAP      256
@@ -41,7 +41,7 @@ static void decode_prot(uint32_t prot, char out[5]) {
     out[4] = 0;
 }
 
-static void dump_modules(vmie* ctx, const process* pr) {
+static void dump_modules(vmie_win32* ctx, const process* pr) {
     pmodule mods[MOD_CAP];
     const int nm = proc_modules(ctx, pr, mods, MOD_CAP);
     if (nm <= 0) {
@@ -68,12 +68,12 @@ static void dump_modules(vmie* ctx, const process* pr) {
     }
 }
 
-static void dump_regions(vmie* ctx, const process* pr) {
+static void dump_regions(vmie_win32* ctx, const process* pr) {
     vregion* rg = malloc((size_t)RGN_CAP * sizeof *rg);
     if (!rg) {
         return;
     }
-    const int total = gva_regions(vmie_memory(ctx), pr->cr3, 0, ~0ull, 0, rg, RGN_CAP);
+    const int total = gva_regions(vmie_win32_mem(ctx), pr->cr3, 0, ~0ull, 0, rg, RGN_CAP);
     const int shown = total < 0 ? 0 : (total < RGN_CAP ? total : RGN_CAP);
     for (int i = 0; i < shown; i++) {
         char prot[5];
@@ -103,7 +103,7 @@ int main(int argc, char** argv) {
         }
     }
 
-    vmie* ctx = vmie_open(ram_path, low);
+    vmie_win32* ctx = vmie_win32_open(ram_path, low);
     if (!ctx) {
         fprintf(stderr, "error: cannot open RAM backing file '%s'\n", ram_path);
         return 1;
@@ -112,14 +112,14 @@ int main(int argc, char** argv) {
     const int rc = host_bootstrap(ctx);
     if (rc != 0) {
         fprintf(stderr, "error: bootstrap failed (%d): %s\n", rc, bootstrap_stage(rc));
-        vmie_close(ctx);
+        vmie_win32_close(ctx);
         return 1;
     }
 
     process* procs = malloc(nmax * sizeof *procs);
     if (!procs) {
         fprintf(stderr, "error: out of memory\n");
-        vmie_close(ctx);
+        vmie_win32_close(ctx);
         return 1;
     }
 
@@ -127,7 +127,7 @@ int main(int argc, char** argv) {
     if (np < 0) {
         fprintf(stderr, "error: proc_list failed (%d)\n", np);
         free(procs);
-        vmie_close(ctx);
+        vmie_win32_close(ctx);
         return 1;
     }
 
@@ -157,6 +157,6 @@ int main(int argc, char** argv) {
     }
 
     free(procs);
-    vmie_close(ctx);
+    vmie_win32_close(ctx);
     return 0;
 }
diff --git a/src/core/gpa.c b/src/core/gpa.c
index 849f129..0e3c823 100644
--- a/src/core/gpa.c
+++ b/src/core/gpa.c
@@ -1,5 +1,6 @@
 #include <stdint.h>
 #include <stddef.h>
+#include <stdlib.h>
 #include <string.h>
 #include <fcntl.h>
 #include <unistd.h>
@@ -147,3 +148,43 @@ void gpa_close(vmie_mem* m) {
 
     clean_ctx(m);
 }
+
+/* ---- public dump source (heap-owned vmie_mem) ---------------------------- *
+ * Thin wrappers over gpa_open*: heap-allocate a vmie_mem and open into it, so a
+ * dump (or any flat/segmented RAM image) is a first-class memory source for the
+ * physical scanners without exposing the win32 engine. */
+
+__attribute__((cold))
+vmie_mem* vmie_mem_open(const char* path, uint64_t low) {
+    vmie_mem* m = calloc(1, sizeof *m);
+    if (!m) {
+        return NULL;
+    }
+    if (gpa_open(m, path, (uintptr_t)low)) {
+        free(m);
+        return NULL;
+    }
+    return m;
+}
+
+__attribute__((cold))
+vmie_mem* vmie_mem_open_segs(const char* path, const gpa_seg* segs, int nseg) {
+    vmie_mem* m = calloc(1, sizeof *m);
+    if (!m) {
+        return NULL;
+    }
+    if (gpa_open_segs(m, path, segs, nseg)) {
+        free(m);
+        return NULL;
+    }
+    return m;
+}
+
+__attribute__((cold))
+void vmie_mem_close(vmie_mem* m) {
+    if (!m) {
+        return;
+    }
+    gpa_close(m);
+    free(m);
+}
diff --git a/src/core/include/core.h b/src/core/include/core.h
index 8d83ff8..bc6f89d 100644
--- a/src/core/include/core.h
+++ b/src/core/include/core.h
@@ -2,17 +2,14 @@
 #define VMIE_CORE_H
 #include <stdint.h>
 #include <stddef.h>
+#include "memmodel.h"   /* gpa_seg (POD, promoted public) + vmie_mem forward decl */
 
 #define VMIE_MAX_SEGS 8
 
-/* One contiguous GPA window backed by a file span: GPA [gpa, gpa+len) maps 1:1
- * onto file offset [file_off, file_off+len). The classic single-`low` guest is
- * two segs ({0,low,0} below the 4 GiB hole, {4G,fsize-low,low} above it). */
-typedef struct gpa_seg {
-    uint64_t gpa;
-    uint64_t len;
-    uint64_t file_off;
-} gpa_seg;
+/* gpa_seg (the GPA<->file-span descriptor) is defined in memmodel.h, included
+ * above: one contiguous GPA window mapping 1:1 onto a file span. The classic
+ * single-`low` guest is two segs ({0,low,0} below the 4 GiB hole, {4G,fsize-low,
+ * low} above it). */
 
 /* Flat RW mmap of the guest RAM backing file. The GPA<->file-offset map is the
  * sorted, dense, in-file segment table seg[0..nseg): each seg is one contiguous
diff --git a/src/engine/gva.c b/src/engine/gva.c
index 0604e9b..518359f 100644
--- a/src/engine/gva.c
+++ b/src/engine/gva.c
@@ -2,7 +2,7 @@
 #include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
-#include "engine.h"
+#include "engine-arch.h"
 
 /* PTE permission bits we propagate down the walk. */
 #define PTE_RW (1ull << 1)
@@ -45,7 +45,15 @@ static int gva_gpa(vmie_mem* m, uintptr_t cr3, uintptr_t va,
     return 0;
 }
 
-/* zero-copy borrowed read: leaf-bounded host pointer at `va` (see engine.h). */
+/* cold extern translate: GPA of `va` under `cr3`, or -1. Wraps the hot static
+ * gva_gpa for cold callers outside this TU (win32 bring-up) without exposing the
+ * inlinable hot primitive. Declared in engine-arch.h. */
+__attribute__((cold))
+int gva_translate(vmie_mem* m, uintptr_t cr3, uintptr_t va, uintptr_t* gpa) {
+    return gva_gpa(m, cr3, va, gpa, NULL);
+}
+
+/* zero-copy borrowed read: leaf-bounded host pointer at `va` (see memmodel.h). */
 __attribute__((hot))
 const void* gva_ptr(vmie_mem* m, uintptr_t cr3, uintptr_t va, size_t* avail) {
     uintptr_t gpa; size_t leaf;
@@ -91,47 +99,6 @@ int khalf_score(const vmie_mem* m, uint64_t pml4) {
     return n;
 }
 
-__attribute__((cold))
-int cr3_recover(vmie* v, uint64_t va_self, uint64_t target_pa, uintptr_t* cr3_out) {
-    vmie_mem* m = &v->mem;
-    int best_score = -1; uint64_t best = 0;
-    for (size_t off = 0; off + 0x1000 <= m->fsize; off += 0x1000) {
-        const uintptr_t cand = offset_gpa(m, off);
-        uintptr_t gpa;
-        if (gva_gpa(m, cand, va_self, &gpa, NULL)) continue;
-        if ((gpa & ~0xFFFull) != (target_pa & ~0xFFFull)) continue;
-        const int score = khalf_score(m, cand);
-        if (score > best_score) { best_score = score; best = cand; }
-    }
-    if (best_score < 0) return -1;
-    *cr3_out = best;
-    return 0;
-}
-
-/* ---- lifecycle (cold) ---------------------------------------------------- */
-
-__attribute__((cold))
-vmie* vmie_open(const char* ram_path, uint64_t low) {
-    vmie* v = calloc(1, sizeof *v);
-    if (!v) {
-        return NULL;
-    }
-    if (gpa_open(&v->mem, ram_path, low)) {
-        free(v);
-        return NULL;
-    }
-    return v;
-}
-
-__attribute__((cold))
-void vmie_close(vmie* v) {
-    if (!v) {
-        return;
-    }
-    gpa_close(&v->mem);
-    free(v);
-}
-
 /* ---- region enumeration -------------------------------------------------- */
 
 struct rgn_acc {
@@ -302,26 +269,3 @@ int gva_sweep(vmie_mem* m, uintptr_t cr3, uint64_t lo, uint64_t hi,
     free(rg); free(buf);
     return rc;
 }
-
-/* ---- physical-image signature bridge ------------------------------------- *
- * Iterates the core segment map (each seg is one mem_view_t over its file span)
- * and runs the pure matcher. Reaches into vmie_mem, so it lives engine-side. */
-struct physcb { uint64_t* out; int max, n; };
-static int phys_hit(void* u, uint64_t gpa) {
-    struct physcb* c = u;
-    if (c->out && c->n < c->max) c->out[c->n] = gpa;
-    c->n++;
-    return 0;
-}
-
-int gva_sig_phys(vmie_mem* m, const sig_pattern_t* p, uint64_t* out, int max) {
-    if (!p || p->len == 0) return -1;
-    struct physcb c = { out, max, 0 };
-
-    for (int i = 0; i < m->nseg; i++) {
-        const gpa_seg* s = &m->seg[i];
-        const mem_view_t v = { (const uint8_t*)m->pa + s->file_off, (size_t)s->len, s->gpa };
-        sig_each(v, p, phys_hit, &c);
-    }
-    return c.n;
-}
diff --git a/src/engine/include/engine-arch.h b/src/engine/include/engine-arch.h
new file mode 100644
index 0000000..a323e65
--- /dev/null
+++ b/src/engine/include/engine-arch.h
@@ -0,0 +1,35 @@
+#ifndef VMIE_ENGINE_ARCH_H
+#define VMIE_ENGINE_ARCH_H
+#include <stdint.h>
+#include <stddef.h>
+#include "core.h"
+#include "memmodel.h"   /* vmie_mem, vregion/VR_*, gva_read/write/ptr/regions/sweep */
+
+/* x86-64 long-mode paging bits, shared by every PT-walking TU. */
+#define PFN_MASK (0xFFFFFFFFFFull << 12)
+#define PG_P     0x1ull
+#define PG_PS    0x80ull
+
+/* sign-extend a 48-bit canonical VA */
+#define VA_CANON(v) (((v) & (1ull << 47)) ? ((v) | 0xFFFF000000000000ull) : (v))
+
+/* USER_MIN/USER_MAX/KERN_MIN (the canonical VA-window bounds) live in
+ * memmodel.h (handler-visible), pulled in above. */
+
+/* gva_ptr is declared in memmodel.h; the engine marks its definition hot. */
+
+/* gva_read/gva_write/gva_regions/gva_sweep + gva_sweep_cb and vregion/VR_*
+ * are the OS-agnostic contract: declared in memmodel.h, pulled in above. */
+
+/* paging heuristic, shared by the arch walker and the win32 bring-up. Counts
+ * present kernel-half PML4 entries under `pml4` (an address-space liveness
+ * score). OS-agnostic: const vmie_mem*, no profile/struct vmie. */
+int   khalf_score(const vmie_mem* m, uint64_t pml4) __attribute__((cold));
+
+/* cold extern wrapper over the hot static page-table walk: translate `va` under
+ * `cr3` to a GPA (no leaf length). Returns 0 on success, -1 if not present. For
+ * cold callers outside gva.c (win32 bring-up); the hot inlinable primitive stays
+ * private to gva.c. */
+int   gva_translate(vmie_mem* m, uintptr_t cr3, uintptr_t va, uintptr_t* gpa) __attribute__((cold));
+
+#endif /* VMIE_ENGINE_ARCH_H */
diff --git a/src/engine/include/engine.h b/src/engine/include/engine.h
deleted file mode 100644
index 77bcd04..0000000
--- a/src/engine/include/engine.h
+++ /dev/null
@@ -1,68 +0,0 @@
-#ifndef VMIE_ENGINE_H
-#define VMIE_ENGINE_H
-#include <stdint.h>
-#include <stddef.h>
-#include "core.h"
-#include "memmodel.h"   /* vmie_mem, vregion/VR_*, gva_read/write/ptr/regions/sweep */
-#include "sigscan.h"    /* sig_pattern_t (for gva_sig_phys) */
-#include "pe.h"         /* PE image parsing + vmie_pe_section (engine-private) */
-
-/* x86-64 long-mode paging bits, shared by every PT-walking TU. */
-#define PFN_MASK (0xFFFFFFFFFFull << 12)
-#define PG_P     0x1ull
-#define PG_PS    0x80ull
-
-/* sign-extend a 48-bit canonical VA */
-#define VA_CANON(v) (((v) & (1ull << 47)) ? ((v) | 0xFFFF000000000000ull) : (v))
-
-/* USER_MIN/USER_MAX/KERN_MIN (the canonical VA-window bounds) live in
- * memmodel.h (handler-visible), pulled in above. */
-
-typedef struct {
-    uint8_t  guid[16];      /* ntoskrnl CodeView GUID (in-memory byte order) */
-    uint32_t age;           /* CodeView age                                  */
-    /* _EPROCESS (read under kcr3) */
-    uint16_t ep_dtb;        /* Pcb.DirectoryTableBase (cr3)             */
-    uint16_t ep_pid;        /* UniqueProcessId                          */
-    uint16_t ep_ppid;       /* InheritedFromUniqueProcessId (0=unknown) */
-    uint16_t ep_links;      /* ActiveProcessLinks                       */
-    uint16_t ep_name;       /* ImageFileName (char[15], ANSI)           */
-    uint16_t ep_peb;        /* Peb (0=unknown)                          */
-    uint16_t ep_createtime; /* CreateTime (FILETIME, 0=unknown)         */
-    uint16_t ep_imgpath;    /* ImageFilePathHint (UNICODE_STRING, 0=unk)*/
-    /* user-side PEB chain (read under process cr3) */
-    uint16_t peb_ldr;       /* PEB.Ldr                                  */
-    uint16_t ldr_loadlist;  /* PEB_LDR_DATA.InLoadOrderModuleList       */
-    uint16_t lde_base, lde_size, lde_name; /* LDR_DATA_TABLE_ENTRY      */
-    uint16_t lde_fullname;  /* LDR_DATA_TABLE_ENTRY.FullDllName         */
-} profile;
-
-/* sysproc = System _EPROCESS VA: the ActiveProcessLinks ring anchor, captured at
- * bootstrap so enumeration needs no export re-resolve. mem is the FIRST member
- * so a vmie* aliases a vmie_mem*. prof carried by value. */
-typedef struct vmie {
-    vmie_mem mem;
-    uint64_t kcr3;
-    uint64_t kbase;
-    uint64_t sysproc;
-    profile  prof;
-} vmie;
-
-int profile_build(vmie* v, uintptr_t cr3, uint64_t sys_ep, const uint8_t guid[16], uint32_t age);
-
-/* gva_ptr is declared in memmodel.h; the engine marks its definition hot. */
-
-/* bootstrap helpers (gva.c) */
-int   khalf_score(const vmie_mem* m, uint64_t pml4) __attribute__((cold));
-int   cr3_recover(vmie* v, uint64_t va_self, uint64_t target_pa, uintptr_t* cr3_out) __attribute__((cold));
-
-/* gva_read/gva_write/gva_regions/gva_sweep + gva_sweep_cb and vregion/VR_*
- * are the OS-agnostic contract: declared in memmodel.h, pulled in above. */
-
-/* Scan the raw physical image for a signature, iterating the core segment map
- * (each seg is one mem_view_t over its file span). Reaches into vmie_mem, so it
- * is an engine bridge, not a handler. Returns the number of GPA hits (writes up
- * to `max` to `out`; -1 on a bad pattern). */
-int gva_sig_phys(vmie_mem* m, const sig_pattern_t* p, uint64_t* out, int max);
-
-#endif /* VMIE_ENGINE_H */
diff --git a/src/engine/sigphys.c b/src/engine/sigphys.c
new file mode 100644
index 0000000..e335531
--- /dev/null
+++ b/src/engine/sigphys.c
@@ -0,0 +1,62 @@
+/* sigphys.c - physical-image signature bridge (OS-agnostic engine bridge).
+ *
+ * Iterates the core segment map (each seg is one mem_view_t over its file span)
+ * and runs the pure matcher. Reaches into vmie_mem (the segment table), so it is
+ * an engine bridge, not a handler - but it names no Windows concept and depends
+ * on no paging/profile, so it lives engine-side, outside src/engine/win32/. The
+ * dump-only scan set is { core/gpa.c, handlers/sigscan.c, this }, no win32. */
+#include <stdint.h>
+#include <stddef.h>
+#include "core.h"
+#include "sigscan.h"
+#include "scan.h"
+
+struct physcb { uint64_t* out; int max, n; };
+static int phys_hit(void* u, uint64_t gpa) {
+    struct physcb* c = u;
+    if (c->out && c->n < c->max) c->out[c->n] = gpa;
+    c->n++;
+    return 0;
+}
+
+int sig_scan_mem(vmie_mem* m, const sig_pattern_t* p, uint64_t* out, int max) {
+    if (!p || p->len == 0) return -1;
+    struct physcb c = { out, max, 0 };
+
+    for (int i = 0; i < m->nseg; i++) {
+        const gpa_seg* s = &m->seg[i];
+        const mem_view_t v = { (const uint8_t*)m->pa + s->file_off, (size_t)s->len, s->gpa };
+        sig_each(v, p, phys_hit, &c);
+    }
+    return c.n;
+}
+
+/* Tagging callback for the multi-source scan: stamps the current source index
+ * onto each hit and writes attributed records up to capacity. */
+struct srccb { sig_hit_src* out; int max, n, source; };
+static int src_hit(void* u, uint64_t gpa) {
+    struct srccb* c = u;
+    if (c->out && c->n < c->max) {
+        c->out[c->n].source = c->source;
+        c->out[c->n].gpa    = gpa;
+    }
+    c->n++;
+    return 0;
+}
+
+int sig_scan_sources(vmie_mem* const* srcs, int nsrc, const sig_pattern_t* p,
+                     sig_hit_src* out, int max) {
+    if (!p || p->len == 0) return -1;
+    struct srccb c = { out, max, 0, 0 };
+
+    for (int si = 0; si < nsrc; si++) {
+        vmie_mem* m = srcs[si];
+        c.source = si;
+        for (int i = 0; i < m->nseg; i++) {
+            const gpa_seg* s = &m->seg[i];
+            const mem_view_t v = { (const uint8_t*)m->pa + s->file_off, (size_t)s->len, s->gpa };
+            sig_each(v, p, src_hit, &c);
+        }
+    }
+    return c.n;
+}
diff --git a/src/engine/include/contract.h b/src/engine/win32/contract.h
similarity index 100%
rename from src/engine/include/contract.h
rename to src/engine/win32/contract.h
diff --git a/src/engine/win32/engine-win32.h b/src/engine/win32/engine-win32.h
new file mode 100644
index 0000000..392bc23
--- /dev/null
+++ b/src/engine/win32/engine-win32.h
@@ -0,0 +1,44 @@
+#ifndef VMIE_ENGINE_WIN32_H
+#define VMIE_ENGINE_WIN32_H
+#include <stdint.h>
+#include <stddef.h>
+#include "engine-arch.h"   /* paging macros, khalf_score, gva_* contract */
+#include "contract.h"      /* guest-agent beacon layout */
+#include "pe.h"            /* PE image parsing + vmie_pe_section (engine-private) */
+
+typedef struct {
+    uint8_t  guid[16];      /* ntoskrnl CodeView GUID (in-memory byte order) */
+    uint32_t age;           /* CodeView age                                  */
+    /* _EPROCESS (read under kcr3) */
+    uint16_t ep_dtb;        /* Pcb.DirectoryTableBase (cr3)             */
+    uint16_t ep_pid;        /* UniqueProcessId                          */
+    uint16_t ep_ppid;       /* InheritedFromUniqueProcessId (0=unknown) */
+    uint16_t ep_links;      /* ActiveProcessLinks                       */
+    uint16_t ep_name;       /* ImageFileName (char[15], ANSI)           */
+    uint16_t ep_peb;        /* Peb (0=unknown)                          */
+    uint16_t ep_createtime; /* CreateTime (FILETIME, 0=unknown)         */
+    uint16_t ep_imgpath;    /* ImageFilePathHint (UNICODE_STRING, 0=unk)*/
+    /* user-side PEB chain (read under process cr3) */
+    uint16_t peb_ldr;       /* PEB.Ldr                                  */
+    uint16_t ldr_loadlist;  /* PEB_LDR_DATA.InLoadOrderModuleList       */
+    uint16_t lde_base, lde_size, lde_name; /* LDR_DATA_TABLE_ENTRY      */
+    uint16_t lde_fullname;  /* LDR_DATA_TABLE_ENTRY.FullDllName         */
+} profile;
+
+/* sysproc = System _EPROCESS VA: the ActiveProcessLinks ring anchor, captured at
+ * bootstrap so enumeration needs no export re-resolve. mem is the FIRST member
+ * so a vmie_win32* aliases a vmie_mem*. prof carried by value. */
+typedef struct vmie_win32 {
+    vmie_mem mem;
+    uint64_t kcr3;
+    uint64_t kbase;
+    uint64_t sysproc;
+    profile  prof;
+} vmie_win32;
+
+int profile_build(vmie_win32* v, uintptr_t cr3, uint64_t sys_ep, const uint8_t guid[16], uint32_t age);
+
+/* bootstrap helper (win32 host bring-up) */
+int   cr3_recover(vmie_win32* v, uint64_t va_self, uint64_t target_pa, uintptr_t* cr3_out) __attribute__((cold));
+
+#endif /* VMIE_ENGINE_WIN32_H */
diff --git a/src/engine/guest.c b/src/engine/win32/guest.c
similarity index 100%
rename from src/engine/guest.c
rename to src/engine/win32/guest.c
diff --git a/src/engine/host.c b/src/engine/win32/host.c
similarity index 78%
rename from src/engine/host.c
rename to src/engine/win32/host.c
index 43ebc3f..34db062 100644
--- a/src/engine/host.c
+++ b/src/engine/win32/host.c
@@ -1,10 +1,56 @@
 #include <string.h>
 #include <stddef.h>
-#include "vmie.h"
-#include "contract.h"
-#include "engine.h"
+#include <stdlib.h>
+#include "win32.h"
+#include "engine-win32.h"
 
 #define MZ           0x5A4Du
+
+/* ---- lifecycle (cold) ---------------------------------------------------- */
+
+__attribute__((cold))
+vmie_win32* vmie_win32_open(const char* ram_path, uint64_t low) {
+    vmie_win32* v = calloc(1, sizeof *v);
+    if (!v) {
+        return NULL;
+    }
+    if (gpa_open(&v->mem, ram_path, low)) {
+        free(v);
+        return NULL;
+    }
+    return v;
+}
+
+__attribute__((cold))
+void vmie_win32_close(vmie_win32* v) {
+    if (!v) {
+        return;
+    }
+    gpa_close(&v->mem);
+    free(v);
+}
+
+/* ---- bootstrap CR3 recovery (cold) --------------------------------------- *
+ * Scan the image for a candidate PML4 that translates the agent's self-VA to its
+ * known physical anchor, scored by kernel-half liveness. The page-table walk is
+ * borrowed from the arch layer via gva_translate (cold), so the hot path stays
+ * private to gva.c. */
+__attribute__((cold))
+int cr3_recover(vmie_win32* v, uint64_t va_self, uint64_t target_pa, uintptr_t* cr3_out) {
+    vmie_mem* m = &v->mem;
+    int best_score = -1; uint64_t best = 0;
+    for (size_t off = 0; off + 0x1000 <= m->fsize; off += 0x1000) {
+        const uintptr_t cand = offset_gpa(m, off);
+        uintptr_t gpa;
+        if (gva_translate(m, cand, va_self, &gpa)) continue;
+        if ((gpa & ~0xFFFull) != (target_pa & ~0xFFFull)) continue;
+        const int score = khalf_score(m, cand);
+        if (score > best_score) { best_score = score; best = cand; }
+    }
+    if (best_score < 0) return -1;
+    *cr3_out = best;
+    return 0;
+}
 #define DIR_EXPORT   0u
 #define DIR_DEBUG    6u
 #define DBG_CODEVIEW 2u
@@ -162,12 +208,12 @@ static void beacon_ack(vmie_mem* m, uint64_t anchor_pa) {
     gpa_write(m, anchor_pa + offsetof(contract, ack), &ack, 8);
 }
 
-vmie_mem* vmie_memory(vmie* v) {
+vmie_mem* vmie_win32_mem(vmie_win32* v) {
     return v ? &v->mem : NULL;
 }
 
 __attribute__((cold))
-int host_bootstrap(vmie* v) {
+int host_bootstrap(vmie_win32* v) {
     vmie_mem* m = &v->mem;
     uint64_t anchor_pa, va_self;
     uintptr_t cr3boot;
diff --git a/src/engine/pe.c b/src/engine/win32/pe.c
similarity index 100%
rename from src/engine/pe.c
rename to src/engine/win32/pe.c
diff --git a/src/engine/proc.c b/src/engine/win32/proc.c
similarity index 91%
rename from src/engine/proc.c
rename to src/engine/win32/proc.c
index f775871..22d93b7 100644
--- a/src/engine/proc.c
+++ b/src/engine/win32/proc.c
@@ -2,15 +2,15 @@
 #include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
-#include "engine.h"
-#include "vmie.h"
+#include "engine-win32.h"
+#include "win32.h"
 
 #define pr_(v) ((v)->prof)
 
 #define RING_GUARD 100000u
 #define MOD_GUARD    4096u
 
-static void grab_ustr(vmie* v, uintptr_t cr3, uint64_t va, gtext* out) {
+static void grab_ustr(vmie_win32* v, uintptr_t cr3, uint64_t va, gtext* out) {
     vmie_mem* m = &v->mem;
     uint16_t len = 0;
     uint64_t buf = 0;
@@ -23,7 +23,7 @@ static void grab_ustr(vmie* v, uintptr_t cr3, uint64_t va, gtext* out) {
     out->len = len;
 }
 
-int proc_list(vmie* v, int skip_system, process* dst, size_t nmax) {
+int proc_list(vmie_win32* v, int skip_system, process* dst, size_t nmax) {
     vmie_mem* m = &v->mem;
     const profile* p = &pr_(v);
     const uint64_t kcr3 = v->kcr3;
@@ -74,7 +74,7 @@ int proc_list(vmie* v, int skip_system, process* dst, size_t nmax) {
     return (int)n;
 }
 
-int proc_modules(vmie* v, const process* pr, pmodule* dst, size_t nmax) {
+int proc_modules(vmie_win32* v, const process* pr, pmodule* dst, size_t nmax) {
     vmie_mem* m = &v->mem;
     const profile* p = &pr_(v);
     const uint64_t cr3 = pr->cr3;
@@ -119,7 +119,7 @@ int proc_modules(vmie* v, const process* pr, pmodule* dst, size_t nmax) {
  * Project a Windows process/module list onto the generic cr3/range surface and
  * delegate to the OS-agnostic scanners (scan.h). */
 
-scan* scan_new(vmie* v, const process* pr, scan_type t, const void* value,
+scan* scan_new(vmie_win32* v, const process* pr, scan_type t, const void* value,
                int be, int aligned, uint64_t lo, uint64_t hi) {
     if (!pr) {
         return NULL;
@@ -129,7 +129,7 @@ scan* scan_new(vmie* v, const process* pr, scan_type t, const void* value,
 
 #define PTR_MOD_CAP 1024u
 
-int vmie_scan_pointer(vmie* v, const process* pr, uint64_t target,
+int vmie_scan_pointer(vmie_win32* v, const process* pr, uint64_t target,
                       int max_depth, uint32_t max_off, scan_ptr_path* out, int max) {
     if (!pr) {
         return -1;
diff --git a/src/engine/profile.c b/src/engine/win32/profile.c
similarity index 90%
rename from src/engine/profile.c
rename to src/engine/win32/profile.c
index 57b1647..c5232cc 100644
--- a/src/engine/profile.c
+++ b/src/engine/win32/profile.c
@@ -1,10 +1,10 @@
 #include <stdint.h>
 #include <string.h>
-#include "engine.h"
+#include "engine-win32.h"
 
 #define pr_(v) ((v)->prof)
 
-#define RING_CAP 4096   /* USER_MIN/USER_MAX/KERN_MIN come from engine.h */
+#define RING_CAP 4096   /* USER_MIN/USER_MAX/KERN_MIN come from engine-arch.h */
 #define SCAN_MAX 1024
 #define FT_LO    0x01D0000000000000ll
 #define FT_HI    0x01F0000000000000ll
@@ -14,7 +14,7 @@ static int canon_ok(uint64_t p, int kernel) {
 }
 
 /* Circular LIST_ENTRY walker (Flink at node+0); one primitive for both rings. */
-static int list_ring_ok(vmie* v, uintptr_t cr3, uint64_t head, int kernel) {
+static int list_ring_ok(vmie_win32* v, uintptr_t cr3, uint64_t head, int kernel) {
     vmie_mem* m = &v->mem;
     uint64_t node;
     if (gva_read(m, cr3, head, &node, 8)) {
@@ -32,7 +32,7 @@ static int list_ring_ok(vmie* v, uintptr_t cr3, uint64_t head, int kernel) {
 }
 
 /* Pass 1: ep_name/ep_pid/ep_links/ep_dtb from the System _EPROCESS. */
-static int discover_core(vmie* v, uintptr_t cr3, uint64_t sys_ep) {
+static int discover_core(vmie_win32* v, uintptr_t cr3, uint64_t sys_ep) {
     vmie_mem* m = &v->mem;
     profile* p = &pr_(v);
     uint8_t buf[0x800];
@@ -88,7 +88,7 @@ static int discover_core(vmie* v, uintptr_t cr3, uint64_t sys_ep) {
 }
 
 /* Transient snapshot of (eprocess, pid, cr3) over the active ring. */
-static int collect_procs(vmie* v, uintptr_t cr3, uint64_t sys_ep, uint64_t* eps, uint32_t* pids, uint64_t* cr3s, int cap) {
+static int collect_procs(vmie_win32* v, uintptr_t cr3, uint64_t sys_ep, uint64_t* eps, uint32_t* pids, uint64_t* cr3s, int cap) {
     vmie_mem* m = &v->mem;
     const profile* p = &pr_(v);
     int n = 0;
@@ -112,7 +112,7 @@ static int collect_procs(vmie* v, uintptr_t cr3, uint64_t sys_ep, uint64_t* eps,
 }
 
 /* Pass 2a: ep_ppid by population (creator PID). Best-effort. */
-static void discover_ppid(vmie* v, uintptr_t cr3, const uint64_t* eps, const uint32_t* pids, int n) {
+static void discover_ppid(vmie_win32* v, uintptr_t cr3, const uint64_t* eps, const uint32_t* pids, int n) {
     vmie_mem* m = &v->mem;
     int best_off = -1, best_hits = 0;
     for (int o = 0x100; o <= 0x600; o += 8) {
@@ -137,7 +137,7 @@ static void discover_ppid(vmie* v, uintptr_t cr3, const uint64_t* eps, const uin
 }
 
 /* Pass 2b: ep_createtime (CreateTime, FILETIME) -- every sample in boot range, System earliest. Best-effort. */
-static void discover_createtime(vmie* v, uintptr_t cr3, const uint64_t* eps, int n) {
+static void discover_createtime(vmie_win32* v, uintptr_t cr3, const uint64_t* eps, int n) {
     vmie_mem* m = &v->mem;
     for (int o = 0x140; o <= 0x600; o += 8) {
         int64_t sysv = 0;
@@ -160,7 +160,7 @@ static void discover_createtime(vmie* v, uintptr_t cr3, const uint64_t* eps, int
 
 /* Pass 2c: ep_imgpath (ImageFilePathHint) -- UNICODE_STRING whose tail equals the
  * process's untruncated ImageFileName; probe short-named (<15) procs only. Best-effort. */
-static void discover_imgpath(vmie* v, uintptr_t cr3, const uint64_t* eps, const uint64_t* cr3s, int n) {
+static void discover_imgpath(vmie_win32* v, uintptr_t cr3, const uint64_t* eps, const uint64_t* cr3s, int n) {
     vmie_mem* m = &v->mem;
     profile* p = &pr_(v);
     for (int i = 0; i < n; i++) {
@@ -202,7 +202,7 @@ static void discover_imgpath(vmie* v, uintptr_t cr3, const uint64_t* eps, const
 
 /* Pass 2d: ep_peb + user PEB/Ldr chain; commits the x64-invariant LDR offsets
  * (incl. FullDllName) after validating them on the live first entry. */
-static int discover_user_chain(vmie* v, uintptr_t cr3, const uint64_t* eps, const uint64_t* cr3s, int n) {
+static int discover_user_chain(vmie_win32* v, uintptr_t cr3, const uint64_t* eps, const uint64_t* cr3s, int n) {
     vmie_mem* m = &v->mem;
     profile* p = &pr_(v);
 
@@ -260,7 +260,7 @@ static int discover_user_chain(vmie* v, uintptr_t cr3, const uint64_t* eps, cons
 }
 
 __attribute__((cold))
-int profile_build(vmie* v, uintptr_t cr3, uint64_t sys_ep, const uint8_t guid[16], uint32_t age) {
+int profile_build(vmie_win32* v, uintptr_t cr3, uint64_t sys_ep, const uint8_t guid[16], uint32_t age) {
     memset(&pr_(v), 0, sizeof(pr_(v)));
     memcpy(pr_(v).guid, guid, 16);
     pr_(v).age = age;
diff --git a/src/engine/text.c b/src/engine/win32/text.c
similarity index 92%
rename from src/engine/text.c
rename to src/engine/win32/text.c
index 7a50cb2..3965d1a 100644
--- a/src/engine/text.c
+++ b/src/engine/win32/text.c
@@ -1,7 +1,7 @@
 #include <stdint.h>
 #include <stddef.h>
-#include "engine.h"
-#include "vmie.h"
+#include "engine-win32.h"
+#include "win32.h"
 
 static void utf8_emit(uint32_t cp, char* dst, size_t size, size_t* need, size_t* wrote) {
     uint8_t b[4]; size_t k;
@@ -16,7 +16,7 @@ static void utf8_emit(uint32_t cp, char* dst, size_t size, size_t* need, size_t*
     *need += k;
 }
 
-size_t gva_read_text(vmie* v, uintptr_t cr3, uintptr_t va, size_t nmemb, char* dst, size_t size) {
+size_t gva_read_text(vmie_win32* v, uintptr_t cr3, uintptr_t va, size_t nmemb, char* dst, size_t size) {
     vmie_mem* m = &v->mem;
     size_t   need = 0, wrote = 0;
     uint16_t stage[256];
diff --git a/src/handlers/sigscan.c b/src/handlers/sigscan.c
index db368a6..9d6f8e1 100644
--- a/src/handlers/sigscan.c
+++ b/src/handlers/sigscan.c
@@ -66,6 +66,19 @@ bool sig_parse_mask(const uint8_t* b, const char* m, sig_pattern_t* out) {
     return true;
 }
 
+bool sig_from_bytes(const uint8_t* bytes, size_t len, sig_pattern_t* out) {
+    if (!bytes || !out || len == 0) return false;
+
+    char* mask = malloc(len + 1);                  /* all-'x' (exact, no wildcard) */
+    if (!mask) return false;
+    memset(mask, 'x', len);
+    mask[len] = 0;
+
+    const bool ok = sig_parse_mask(bytes, mask, out);
+    free(mask);
+    return ok;
+}
+
 void sig_free(sig_pattern_t* p) {
     if (!p) return;
     free(p->bytes); free(p->mask);