Add support for REINDEX EXPRESSIONS

FossilOrigin-Name: d56954146ce5eccd63b65242abe2e6556dbceda39a58eab39f5884884afea337

diff --cc manifest
index f823f0bd5ca41eaed819e0196222ae0c76f9072a,9773313aa037aa62ad5568b9c8029cf7aaba38db..31381f71a592290455033e32880add0a8f3d75af
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Fix\sharmless\scompiler\swarnings\sin\sthe\scsv.c.
- D 2026-03-20T20:35:21.041
 -C Undo\s"indices"→"indexes"\schanges\sin\scomments,\sto\savoid\sdiff\sclutter.\nFix\sa\scouple\sof\sunreachable\sbranches.
 -D 2026-03-21T12:55:57.681
++C Add\ssupport\sfor\sREINDEX\sEXPRESSIONS
++D 2026-03-21T13:05:54.156
  F .fossil-settings/binary-glob 61195414528fb3ea9693577e1980230d78a1f8b0a54c78cf1b9b24d0a409ed6a x
  F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
  F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
@@@ -2195,8 -2195,8 +2195,9 @@@ F tool/warnings-clang.sh bbf6a1e685e534
  F tool/warnings.sh a554d13f6e5cf3760f041b87939e3d616ec6961859c3245e8ef701d1eafc2ca2
  F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
  F tool/winmain.c 00c8fb88e365c9017db14c73d3c78af62194d9644feaf60e220ab0f411f3604c
- P 078b3162d0d3d3035f4d3ad88664066d99c218a731ac481b9f1172529e26e4eb
- R 6118388098c7e34cd28c2d0d4e691fd3
 -P 72650dc152279a6da1937f377b1e16b79f4cd664841e12222dc5459838408d22
 -R e0fda48d40309d20d90420d4127d6e00
++P 6ac701f89e2ac8dfd18d041eb8c36a0c2b9fedc5618d3a95be794aecce5c59cf 0042ff9afd00eca0a837e9bbe57540ff2810fcd58b4f7e3f4e3b83aad5699757
++R 4583f58b8b625fa8540692c6b258485c
++T +closed 0042ff9afd00eca0a837e9bbe57540ff2810fcd58b4f7e3f4e3b83aad5699757
  U drh
- Z fe45777f055524901bc7f41cba1d3425
 -Z 2e3b1644d674f417856a9f921bab3628
++Z 0e0e45da5468296ab87184380cab5c90
  # Remove this line to create a well-formed Fossil manifest.

diff --cc manifest.uuid
index 5002e0c5ee3b045a7e0008c820c11033ebc5f73b,e77b7cd8ffb1ffb6cda90c8bc4805832f7f2a68e..5766854a9a65db669e8d9d9f22b4eb80f284c0c8
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- 6ac701f89e2ac8dfd18d041eb8c36a0c2b9fedc5618d3a95be794aecce5c59cf
 -0042ff9afd00eca0a837e9bbe57540ff2810fcd58b4f7e3f4e3b83aad5699757
++d56954146ce5eccd63b65242abe2e6556dbceda39a58eab39f5884884afea337