greenfield(fomo-lin): session 3 — wizard/gateway F11-F12; refocus to next lane

F11 gateway Local tier requires Redis on main (fix already on next: 56787fab),
F12 wizard exits 0 on gateway failure. Jason directive: focus on next branch +
new structure; ~/.claude deep-testing stopped.

Co-Authored-By: Claude Fable 5 <[email protected]>

docs/reports/greenfield/fomo-lin.md

@@ -150,3 +150,40 @@ proceeds. Installer/init/wizard should own this step.
 
 - Milestone comms sent at: install complete ✓ / first seat launched ✓.
 - First gated-seat probe deliberately deferred until PR #1109 lands (known deny-only state).
+
+## Session 3 (2026-08-08 evening) — wizard + gateway; refocus to `next`
+
+Directive from Jason mid-session: focus shifts to the `next` branch and the new structure
+(stock `~/.claude` untouched; framework wholly under `~/.config/mosaic`). Main's ~/.claude
+write behavior is a deprecated location — findings stand, but no further deep-testing of it.
+
+Wizard run (main): "keep identity, update framework"; ~/.claude hooks install DECLINED per
+directive (wizard rewrote ~/.claude/settings.json anyway — benign, no gated hooks, MCP kept).
+Wizard never prompted about fleet roster or lease-broker unit → F8/F10 disambiguation
+partial: wizard does not visibly own those steps. Full degraded-state test dropped per refocus.
+
+### F11 — gateway "Local" tier hard-requires Redis on main (fixed on next)
+
+Wizard gateway install, Local tier ("embedded database, no dependencies"), port 14242:
+daemon starts then crash-spams ioredis ECONNREFUSED; never healthy; killed manually.
+`main..next` already contains `56787fab fix(gateway): disable Redis consumers on local
+tier (#689)`. Main ships a gateway that cannot come up dependency-free; next has the cure.
+
+### F12 — wizard exits 0 on gateway failure
+
+Terminal shows "▲ Fix the underlying error above, then re-run `mosaic gateway install`"
+and the wizard exits 0. Scripted/CI consumers read success.
+
+### Cosmetic
+
+Skipping the optional ANTHROPIC_API_KEY prompt records the literal string "undefined".
+
+### `next` recon (read-only)
+
+- next install.sh: first-class `--next` prerelease lane (npm @next dist-tag CLI + framework
+  from permanent next branch; guard against mixing @next with a different explicit --ref).
+- next does NOT carry the new structure: ~/.claude handling unchanged; no harness-homes
+  design docs on next or main. New structure = Jason directive + fred W-F design phase.
+
+State: bare seat launch works; gateway stopped. Holding for fred's ruling on a next-lane
+reinstall (proposed) and W-F design review.