Validates the dynamic-linking foundation for the WASM unit runtime: wasi-sdk PIC side modules + a host loader linking a core module and a unit module at runtime with shared memory/table. Exit criterion passed; runtime selected: Wasmtime. See FINDINGS.md for results and realunit-report.md for the real-generated-unit compile log.

Everything builds and runs on k-uce (toolchains under /opt, artifacts under /tmp/uce/wasm-phase0):

bash spikes/wasm-phase0/build_modules.sh   # core.wasm + unit.wasm (wasi-sdk)
bash spikes/wasm-phase0/build_loader.sh    # loader (Wasmtime C API)
/tmp/uce/wasm-phase0/loader                # expect: PHASE0 EXIT CRITERION: PASS

Files:

core.cpp — core-module stand-in: owns memory/allocator/libc++, exports everything; includes the guest-side GOT.func resolver pattern
unit.cpp — unit stand-in: PIC, imports allocator/runtime, exercises GOT, cross-module C++ objects, function pointers, lambdas
loader.cpp — minimal runtime linker (standard wasm-c-api): dylink.0 parsing, base allocation, GOT resolution, init sequencing
wasm_inspect.py — dumps imports/exports/dylink.0 of a module
FINDINGS.md — toolchain pins, WAMR rejection evidence, flag recipe, Phase 2/3 implications
realunit-report.md — collections.uce.cpp/hello.uce.cpp compiled as side modules (worker-agent log)