docs: known-issues — cite PRs #30, #31, #32

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

docs/known-issues.md

@@ -629,7 +629,7 @@ given.
 
 ## NetCDF-4: files without dimension scales, types and order differed from netCDF-C
 
-**Status:** fixed 2026-09-29 (branch `fix/netcdf-phony-dims`). Affected
+**Status:** fixed 2026-09-29 (#30). Affected
 every release (v2.1.0 to v2.7.0) and `main` after #27. Wrong metadata only
 (names, order and types of dimensions and variables); values were read
 right. Users: the dimensions of a file without dimension scales are now
@@ -684,8 +684,7 @@ netCDF4-python-written files with netCDF-C itself, and
 
 ## HDF5 2.0 native complex numbers read as a `{r, i}` compound
 
-**Status:** fixed 2026-09-29 (branch `feat/complex-first-class`; PR not
-yet opened). Affected v2.2.0 to v2.7.0 (class 11 has parsed since v2.2.0)
+**Status:** fixed 2026-09-29 (#31). Affected v2.2.0 to v2.7.0 (class 11 has parsed since v2.2.0)
 and `main` until then. Listed until now under
 [HDF5 features still unsupported](#hdf5-features-still-unsupported).
 
@@ -710,8 +709,7 @@ browser reads `[re, im]` pairs.
 
 ## Chunk dimensions of 2^32 or more were refused
 
-**Status:** fixed 2026-09-29 (branch `feat/huge-chunk-dims`, PR not yet
-opened); affected every release (v2.1.0 to v2.7.0). An error, never wrong
+**Status:** fixed 2026-09-29 (#32); affected every release (v2.1.0 to v2.7.0). An error, never wrong
 data. Nothing for users to do but upgrade; code that matches on
 `DataLayout::Chunked::chunk_dimensions` gets `u64`s now.
 
@@ -735,8 +733,7 @@ test (the file lists; reading such a chunk on wasm32 is
 
 ## Writing a 4 GiB unfiltered chunk held several copies of it
 
-**Status:** fixed 2026-09-29 (branch `feat/huge-chunk-dims`, PR not yet
-opened); affected every release (v2.1.0 to v2.7.0). Memory only. To write
+**Status:** fixed 2026-09-29 (#32); affected every release (v2.1.0 to v2.7.0). Memory only. To write
 large data with the least memory, hand the builder the data
 (`DatasetBuilder::with_u8_data_owned`) and write with
 `FileBuilder::write` (or `FileWriter::finish_with`).