docs: map corpus triage tags

docs/git-branches-tags.md

@@ -1,10 +1,10 @@
 # Git branches and tags — how this repository is organised
 
-**Snapshot:** 2026-10-24, after the open-array M6 final summary.
-`master` = the current docs commit (M6 summary + tag map);
-`origin/master` = `6e40e26`.  M5/M6 (record fields, constructors and
-pointer-based 1-D views) are local; earlier M1–M4 work is on the remote.
-318 tags (316 `v3-*` checkpoints).
+**Snapshot:** 2026-10-24, after the corpus triage follow-up.
+`master` = the current docs commit (triage + tag map);
+`origin/master` = `6e40e26`.  M5/M6 and the triage follow-up are local;
+earlier M1–M4 work is on the remote.  321 tags (319 `v3-*`
+checkpoints).
 
 Mental model:
 
@@ -57,6 +57,8 @@ Each points at the commit that landed a feature, all with green gates:
 | `v3-open-arrays-m5-summary` | `680ace0` | M5 summary/docs refresh |
 | `v3-open-arrays` | `11c8db2` | final: pointer-based 1-D open views |
 | `v3-open-arrays-m6-summary` | `c22e4ae` | final M6 summary/docs |
+| `v3-lfloat` | `5ae8152` | ISO/gm2 `LFLOAT` builtin |
+| `v3-corpus-triage-2026-10-24` | `895ee2e` | post-open-array corpus triage |
 
 These are immutable checkpoints.  Useful commands:
 
@@ -75,7 +77,8 @@ git diff v3-sysclock v3-smallfix      # what the last step changed
 | `v3-session-2026-10-23-exceptions-end` | `96a3080` | Immutable 2026-10-23 exceptions session tag. |
 | `v3-session-2026-10-23-open-arrays-end` | `707b7e4` | 2026-10-23 open-array M1–M4 session tag. |
 | `v3-session-2026-10-24-open-arrays-end` | `680ace0` | 2026-10-24 open-array M5 session tag. |
-| `v3-session-2026-10-24-open-arrays-m6-end` | `c22e4ae` | **Final immutable 2026-10-24 open-array M6 session tag.** |
+| `v3-session-2026-10-24-open-arrays-m6-end` | `c22e4ae` | Open-array M6 session tag. |
+| `v3-session-2026-10-24-triage-end` | `895ee2e` | **Final immutable 2026-10-24 triage session tag.** |
 | `v3-session-2026-10-22` | `c2664ac` | **Moving** session tag. Advanced several times and force-pushed to the final commit. |
 | `v3-session-2026-10-22-final` | `0e81019` | **Early checkpoint** created before the session continued (byte/word16/SysClock/smallfix came after). Historical noise now. |
 | `v3-session-2026-10-22-end` | `c2664ac` | **Final immutable session tag.** Use this one. |
@@ -110,17 +113,18 @@ git push origin :refs/tags/v3-session-2026-10-22-final
 The project convention is one `v3-*` tag per green step across all
 sessions (two-phase parse slices, generics increments, Unicode, stdlib,
 …).  They are a searchable history of passing states, not branches.
-`git tag --list | wc -l` = 318 (316 `v3-*`) is expected; only the
+`git tag --list | wc -l` = 321 (319 `v3-*`) is expected; only the
 recent ones above matter for the current session.
 
 ## Current state
 
-- `master` = current docs commit (open-array M6 summary + tag map),
-  **5 commits ahead** of `origin/master` (`6e40e26`): M5 code/docs,
-  M6 code/docs and this tag map.
-- `v3-open-arrays-m5/m6`, `v3-open-arrays` and the M5/M6 summary/session
-  tags are local; push them with `master` when ready.  Tags through
-  M4 are already on the remote.
+- `master` = current docs commit (triage + tag map), **8 commits
+  ahead** of `origin/master` (`6e40e26`): M5 code/docs, M6 code/docs,
+  LFLOAT, triage docs and this tag map.
+- `v3-open-arrays-m5/m6`, `v3-open-arrays`, `v3-lfloat`,
+  `v3-corpus-triage-2026-10-24` and the M5/M6/triage session tags are
+  local; push them with `master` when ready.  Tags through M4 are
+  already on the remote.
 - Next session: start from `master` and read
   `docs/handoff-2026-10-23-next.md`; continue with open-array M5
   (records/constructors) and the optional pointer-based 1-D view.