[Calls] Ship reusable class discovery and re-audit the same frozen 200-class population #498

Part of #483.

Observed boundary

Priority: P0 foundation / final integration gate. all 200 decisions and reproducible expansion of admission.

Preserve sealed v7. Do not assume fixing a first gate admits a class or that all 200 are executable supported programs.

Implementation scope

Promote the current experiment-only source-surface/domain discovery into reusable tested tooling, reusing Calls catalog/prepare/preflight/cell contracts. First ship the current supported subset and its exact diagnostics; capability extensions can then land independently. Re-run the same 48 selected classes and 152 preordered reserves after each relevant milestone, with unchanged source identities/full member surfaces and explicit frozen revised domain policies. Keep first-gate and later failure stages separate.

Acceptance criteria

• Baseline tooling reproduces all 200 v7 decisions with class identities, ordering, first diagnostics and explicit preparation/native/IR/engine/replay stages.
• Each subsequent audit records before/after gates, next newly exposed limitations and exact supporting revision/tests; rejected cases remain in the ledger.
• No HashMap/HashUtils replacement corpus, function/member dropping or result-driven specialization is used to inflate admission.
• A final supported representative pilot uses class-only native replay coverage, all four profiles and 30/120s with preserved failures and actual search/extraction/replay accounting.
• The task can ship baseline discovery before the other tasks; the final readiness claim waits for the evidenced supported population and protocol checks.

Existing work to reuse or coordinate

• [Calls] Preserve reached inputs and measure native class coverage #479
• [TS Calls] Build a real-project call census and model roadmap #367
• [TS Calls] Audit and classify existing semantic approximations #368
• [TS Calls][Research] Capture stopped-path frontiers for article experiments #373

Evidence and delivery rules

Use the frozen v7 200-class ledger and the source-linked reproducer; do not overwrite sealed experiment output. Reuse existing loaders, domain projection, source instrumentation, candidate/replay contracts and bounded observations. Keep original class members and independently frozen domain policies. Run focused source/native checks for the changed contract and leave broad suites to CI; unsupported and newly exposed later gates remain recorded.

Local evidence: iccq2026-paper/experiments/class-coverage-round-robin-20261002/real-class-campaign-20261014/{original/selection-ledger-v7.json,V7_INFRASTRUCTURE_FRONTIER.md} and real-class-machine-diagnostic-20261014/revised-protocol-v8/README.md.