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Persist deferred workstreams as ROADMAP.md#59

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gvonness-apolitical merged 1 commit intomainfrom
docs/roadmap-and-quality-update
Apr 18, 2026
Merged

Persist deferred workstreams as ROADMAP.md#59
gvonness-apolitical merged 1 commit intomainfrom
docs/roadmap-and-quality-update

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Summary

Docs-only. Adds ROADMAP.md carrying the four deferred workstreams from Cycle 6 so they don't get lost:

  • WS 1 R2 full migration — five AD types still hold inline copies of formulas the kernels module now exports.
  • WS 2 Higher-order Taylor HYPOT rescale on GPU — Phase 7 patched only the primal.
  • WS 3 Richer error types for piggyback + sparse_implicit.
  • WS 4 L-BFGS / Newton silent-filter diagnostics.

Each workstream has prior-fix commit references, a concrete "done when" condition, effort/risk estimate, and a suggested execution order.

Test plan

  • No code changes.

Carries the workstreams that stayed out of Cycle 6 as independent
future PRs, each with enough context to re-enter cold: prior-fix
commit references, a concrete "done when" condition, effort/risk
estimate, and a suggested execution order.

- WS 1: R2 full migration — five AD types still hold inline copies
  of formulas the `kernels` module now exports.
- WS 2: Higher-order Taylor HYPOT rescale on GPU — Phase 7 patched
  only the primal; jet coefficients still overflow.
- WS 3: Richer error types for piggyback + sparse_implicit —
  Option<T> collapses 4-5 failure modes into a single None.
- WS 4: L-BFGS / Newton silent-filter diagnostics — curvature pair
  rejections, gamma clamp hits, and Newton fallback steps aren't
  visible to callers.
@gvonness-apolitical gvonness-apolitical merged commit 8a3a6e0 into main Apr 18, 2026
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@gvonness-apolitical gvonness-apolitical deleted the docs/roadmap-and-quality-update branch April 18, 2026 21:04
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