feat(reconstruction): complete binary-backed C recovery

Replace the partial mechanics transcriptions with a separate, readable C11
reconstruction of the complete Win16 image while preserving the original raw
Ghidra export as immutable evidence. Cover all ordinary and overlapping entry
points, Borland runtime behavior, Win16 imports, segmented data, callbacks,
resources, indirect control flow, physics, rendering, persistence, and
startup/shutdown lifecycles.

Add deterministic extraction and audit tooling plus address-linked ledgers for
functions, imports, DGROUP ranges and objects, relocations, resources, and
callbacks. The final gate records zero raw, partial, restored, unknown,
blocked, or unclassified required units. Keep the semantic-fidelity boundary
explicit: the portable C is not claimed to reproduce a byte-identical Borland
NE build.

Add strict focused harnesses for every reconstructed C unit, exact resource
round-trip checks, and a 16-bit Borland Real48 reference probe. No Rust source
or Cargo metadata is changed in this phase.

Test Plan:
- `bash original/tools/test_reconstructed_c.sh` -- passed
- `bash original/tools/probe_real48_reference.sh` -- passed bit-for-bit
- `python3 original/tools/audit_reconstruction.py --require-complete` -- passed
- `git diff --cached --check` -- passed
- `git diff HEAD -- '*.rs' Cargo.toml Cargo.lock` -- empty

original/MECHANICS_PROGRESS.md

@@ -1,4 +1,11 @@
-# Mechanics reconstruction progress
+# Historical mechanics reconstruction notes
+
+This file preserves the live-Wine observations from the earlier mechanics-only
+pass. Its former partial-status table and pending list are superseded by
+`RECONSTRUCTION_PROGRESS.md` and `FUNCTION_RECONSTRUCTION.tsv`: all functions
+named below, including the complete `1000:7ed9`, `1000:8b0d`, `1000:c79c`, and
+`1000:eab1` paths, now have verified readable-C reconstructions. The runtime
+captures below remain useful independent evidence.
 
 This ledger scopes the current reverse-engineering pass to the claw and
 flippers. The preserved executable is the authority; `TDKPIN_GHIDRA_RAW.c`
@@ -48,18 +55,16 @@ renamed.
 - The speed scalar is 3800 millipixels per tick. Its Borland Real48 direction
   constants are decoded for all release cases in the readable C companion.
 
-## Explicit pending evidence
+## Evidence that was pending in this historical pass
 
-- Transcribe the full raw fixed-point flipper impulse calculation. Production
-  behavior currently uses live-fitted up/down transfer curves with exact record
-  geometry and probe tests.
-- Reproduce original callback batching for non-default detail settings. Physics
-  substeps and claw cadence are recovered, but Rust presents intermediate 10 ms
-  physics states instead of batching 1-5 substeps into one Win16 repaint.
+- The full raw fixed-point flipper impulse calculation is now represented in
+  `reconstructed/tdkpin_flipper_collision.c` and verified at `1000:7ed9`.
+- Original callback batching for detail settings 1..5 is now represented in
+  `reconstructed/tdkpin_timer_tick.c` and `tdkpin_physics.c`. Any later Rust
+  transfer remains a separate goal and is not part of this C phase.
 
-Those items are intentionally not counted as semantic parity. The readable
-C files preserve their raw constants and label unresolved batching/fitted
-arithmetic so later work cannot silently turn an estimate into claimed evidence.
+Those items were intentionally excluded from parity at the time of these notes;
+their later C closure is recorded in the address-linked main ledger.
 
 ## Runtime comparison on 2026-08-22
 
@@ -147,7 +152,8 @@ from the record geometry. Three live left-edge probes at `(115,390)`,
 `(120,390)`, and `(125,390)` produced post-edge positions `(128.718,365)`,
 `(133.397,360)`, and `(138.182,355)` with raw velocities `(1932,-3523)`,
 `(2079,-4658)`, and `(2217,-5889)`. The Rust upward stroke fits those states;
-the full raw calculation remains pending. A separate downstroke probe at
+the full raw calculation was still pending in this historical pass and is now
+closed by the verified `1000:7ed9` reconstruction. A separate downstroke probe at
 `(125,390)` kept position unchanged and assigned `(3519,6302)` before the next
 substep clamped speed to 3800; the Rust return edge now matches that state.