Extract the pathfinder's git-operations doc

DESIGN/14-git-operations.md distills the settled conclusions from the
pathfinder's AI-ANALYSIS-git-operations.md so pro-m1 has a citable
in-repo source: the forward-restore model (C3/C9 — restores are new
forward commits, never reset, never force; pull's rebase of unpushed
local commits is the one deliberate rewrite), C8 as later design
settled it (no sidecar state, reseed from HEAD's first-parent
ancestry, history browser out of scope with the per-card History
section as the one carve-in), and honest call-outs of the three
leanings 06/07 settled differently (C1 substrate, A1 iCloud dual
mode, B6 cadence-as-divergence-budget). Resolves the corpus's
outstanding git-operations-doc tbd.

Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY

DESIGN/README.md

@@ -26,6 +26,7 @@ Each document covers one aspect of the design. Within each:
 | [11-command-nexus.md](11-command-nexus.md) | The command Nexus — every command and action: bindings, contexts, customizability |
 | [12-editions.md](12-editions.md) | The tiers (free / Pro subscription / Teams deferred): one-app distribution, entitlement, provider seam, feature matrix |
 | [13-native-undo.md](13-native-undo.md) | macOS-native undo/redo — the free tier's history substrate |
+| [14-git-operations.md](14-git-operations.md) | Extracted pathfinder git-operations conclusions: the forward-restore model — **Pro tier** |
 
 ## Deferred design iterations