The tier axis comes out of the git stack — compose unconditional, postures mode-driven

HistoryStore.compose(boardRoot📒) returns non-optional and runs for
every session — the nil the gate produced was the only nil it ever had.
makeHistoryProvider is a one-axis decision: git-mode boards bind the git
provider, everything else native, in every tier; Session.tier stays
recorded, dormant. BoardGitSection shrinks to the four mode postures
(.absent and .proPointer die, BoardGitNote and the .git probe with them);
every board carries all three popover tabs (BoardInfoTab.available
retired); the titlebar branch shows on any git-mode board; the settings
sheet and card History section stop reading tier. InertGitTests is
repurposed as UntouchedGitTests — the file layer still never opens .git,
now load-bearing for mode-none boards. The accessibility audit reaches the
settings sheet at last: the fixture board hosts it in every tier, so the
free-fixture disabled-row test becomes an open-and-audit test.

Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY
This commit is contained in:
2026-08-07 20:21:28 -04:00
parent da0d7fd2d7
commit 798a8bac73
32 changed files with 830 additions and 904 deletions
+5 -5
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@@ -377,12 +377,12 @@ enum GitHousekeeping {
/// **When a housekeeping pass runs** (06-history-undo.md Repository hygiene) one per git-mode
/// board session, scheduled at board open and never again.
///
/// ### Structurally unreachable off Pro
/// ### Structurally unreachable on a board with no repository
///
/// One of these exists per `HistoryStore` in mode `git`, and a `HistoryStore` exists only under Pro
/// (`HistoryStore.compose` is the tier gate) `GitAutoCommitter`'s rule, for its reason. The free
/// tier has no housekeeper to disable and no `.git` to pack (12-editions.md The free tier and
/// `.git`, which `InertGitTests` pins against real bytes).
/// One of these exists per `HistoryStore` in mode `git` and nowhere else `GitAutoCommitter`'s
/// rule, for its reason, including the tier gate that used to sit above it and no longer does
/// (12-editions.md PIVOT 2026-08-07). A board the user never added git to detects `none`, so there
/// is no housekeeper to disable and no `.git` to pack.
///
/// ### Off the open path, on purpose
///