feat: add projection and intercept support, remove TOML, fix freeDevMem symbol bug

- Remove TOML dependency from Makefile and compose_device.c
- Implement projection support in config handler: remap device memory
  segments between devices via cells[] pointer reassignment
- Implement intercept support: shadow_copy (write to both devices) and
  shadow_replace (redirect read/write to another device) modes using
  smartAddr handler infrastructure
- Fix critical bug in hmmmm.c: freeDevMem was loaded from "freeDevSpecs"
  symbol instead of "freeDevMem", causing segfault on config reload
- Add intercept context lifecycle management to EmulContext

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Makefile

@@ -4,7 +4,7 @@ SRC_DIR=src
 INC_DIR=inc
 CC=gcc
 OBJDUMP=objdump
-LIBS=deps/tomlc99/libtoml.a deps/ptQueue/out/ptQueue.a deps/wsServer/libws.a deps/flatcc/lib/libflatccrt.a
+LIBS=deps/ptQueue/out/ptQueue.a deps/wsServer/libws.a deps/flatcc/lib/libflatccrt.a
 LIBS_HEADERS=deps/ $(OPENSSL_INCLUDE)
 # flatcc runtime and generated reader headers use const-dropping casts;
 # include both as system headers so -Wcast-qual doesn't apply to them