docs: close backlog — project feature-complete for now

Mark FUTURE.md as feature-complete as of v0.7.0: active roadmap is empty and
the deprioritized backlog (Joplin --force, per-conversation cache reset,
official export-ZIP fallback, o1/o3 reclassification, Obsidian output,
token-expiry notifications, search) is closed as not needed, kept for
reference only. No further work planned.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

FUTURE.md

@@ -1,8 +1,14 @@
 # Planned Future Work
 
-Items completed in each release are moved to the changelog. Items here are
-designed for but not yet implemented. The codebase is structured to make each
-of these additions straightforward.
+> **Status 2026-06-28: feature-complete / done for now.** As of v0.7.0 the
+> active roadmap is empty and the remaining backlog below has been **closed as
+> not needed** — the tool does what it's needed to do as a local, manually-run
+> backup CLI. Items are kept for reference only; revisit on demand if a real
+> need shows up. Nothing here is planned work.
+
+Items completed in each release are moved to the changelog. Items below the
+roadmap were designed for but intentionally not implemented. The codebase is
+structured to make each of these additions straightforward if ever revived.
 
 **Completed:**
 - v0.1.0 — Core export: ChatGPT + Claude, incremental sync, Markdown + JSON output
@@ -444,9 +450,15 @@ surface as a warning, never a hard error (a backup tool must still run).
 
 ---
 
-# Deprioritized
+# Deprioritized — CLOSED as not needed (2026-06-28)
 
-Kept for reference; not on the active roadmap.
+These were considered and intentionally **not** built. Closed, not planned —
+the tool is feature-complete for its purpose. Kept for reference in case a
+real need ever revives one: Joplin `--force`, per-conversation cache reset,
+official export-ZIP fallback, o1/o3 reasoning reclassification, Obsidian
+output, token-expiry notifications (also moot — see §9), and a search
+command. (Also closed, outside this list: handling Claude `attachments`/
+`files`, which the canary will flag if they ever appear in real data.)
 
 ## Export `--force` Flag — SHIPPED v0.6.0