Cardano Updates

The overlay used --replace-fail which breaks when the nixpkgs
ghc-lib-parser (9.6.x) doesn't contain atomic_inc64. Guard the
substitution with a grep check.

haskell.nix's win-reloc-x86_64-pc64.patch is only applied for
GHC < 9.8.3. Without it, iserv-proxy crashes during Windows
cross-compilation when evaluating Template Haskell.

fgl's {-# ANN #-} pragmas trigger Template Haskell evaluation via
iserv-proxy which crashes during Windows cross-compilation.
Strip the HLint annotations (no functional impact) before building.

- CheckpointsSpec: drop 1 → pattern match with error (not vacuous True)
- SequentialSpec/SharedSpec: BS.drop 1 → BS.uncons with error
- db-bench: restore error on empty range instead of silent "[]"
- RangeSpec: fromJust (also partial) → explicit pattern match
- TxSeq: restore infinite lists instead of truncating to 1001 elements

The ghc-lib-parser 9.8.5.20250214 introduced a regression where
genSym.c calls atomic_inc64 which doesn't exist on the build
platform. This breaks the dev shell (fourmolu, hlint, etc).

Apply the same fix as upstream (digital-asset/ghc-lib#571):
replace atomic_inc64 with atomic_inc.

- Use error with descriptive messages instead of silently changing
  semantics (e.g. returning default values)
- Replace NE.!! with pattern matching in LayerSpec.hs
- Extract minPort/maxPort as top-level definitions to avoid repetition
- Use case pattern matching instead of tail/drop 1 to preserve crash
  semantics on impossible cases

Update dependencies

Networking-focused release with outbound governor fixes and
chain-sync timeout adjustments. Also updates CHaP to 2026-02-10.
libblst remains at required v0.3.14.