docs(install): stitch the README → template first-run handoff — item 6 complete

Slice (c), the last of the docs review: the install/first-run story
read end to end against the tree. Facts held (mkFlake args match the
table, disko's @snapshots + hibernation swapfile, .#default/.#me
naming); the one seam — README §3 never pointed the manual path at the
template README's first-run steps — got a connective paragraph. Item 6
deleted from BACKLOG; ROADMAP § Full docs review flipped to ✓.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

agent/JOURNAL.md

@@ -17,6 +17,24 @@ Template:
 
 ---
 
+## 2026-07-04 — docs slice (c): install story — item 6 COMPLETE (iteration #16)
+- **Task:** BACKLOG NOW#6 slice (c), the last one — install/first-run
+  narrative end to end.
+- **Did:** read README §2 (ISO/installer) → §3 (downstream) → template
+  README as one story; checked the facts en route: mkFlake's arg
+  surface == the §3 table (src/username/hardwareProfile/system, lib.nix),
+  disko really makes @snapshots + the hibernation swapfile, .#default /
+  .#me names consistent. One seam fixed: §3 showed `nix flake init -t`
+  but never handed off to the template README's six first-run steps —
+  connective paragraph added (+ "the installer does all of this").
+  Item 6 done → deleted from BACKLOG (NOW now empty); ROADMAP § Full
+  docs review flipped to ✓ with the slice summary.
+- **Verified:** V0 (docs-only) — flake check clean pre-commit.
+- **Pending:** docs-site-vs-Markdown stays a Decision.
+- **Next suggestion:** NEXT#8 (viewers + mime defaults) is the new queue
+  head; note its "Default browser" Decision dependency — the mime module
+  half can proceed with mkDefault degradation regardless.
+
 ## 2026-07-04 — docs slice (d): recovery runbook (iteration #15, item 6d)
 - **Task:** BACKLOG NOW#6 slice (d) — write the undo story.
 - **Did:** docs/RECOVERY.md, symptom-ordered: (1) bad theme/HM change →