docs: re-record demo GIF — clean narrative, zero lint warnings

5-scene story: open → fuzzy find → ripgrep → run file → cheat sheet.
Demo project rewritten with functional dispatch (no class/stdlib method
name lint issues). All frames clean — no ALE warnings, no git markers.

.github/demo.tape

@@ -1,6 +1,5 @@
-# chopsticks demo — reliable version
-# Key insight: NEVER use Escape to close FZF — always Enter (select result).
-# This guarantees Vim returns to Normal mode with a known buffer.
+# chopsticks demo — narrative: "what can I do with this?"
+# Rule: NEVER use Escape to close FZF — always Enter (deterministic).
 
 Output .github/demo.gif
 Set Shell bash
@@ -8,33 +7,39 @@ Set FontSize 14
 Set Width 1080
 Set Height 620
 Set Theme "Builtin Solarized Dark"
-Set TypingSpeed 40ms
+Set TypingSpeed 35ms
 Set Padding 10
 
-# ── 1. Open file — syntax + statusline ─────────────────────────────────────
-Type "cd /tmp/demo-project && vim app.py"
+# ── 1. Context + open ──────────────────────────────────────────────────────
+# The tagline tells the viewer WHY before showing WHAT.
+Type "cd /tmp/demo-project"
+Enter
+Sleep 0.8s
+Type "vim server.py"
 Enter
 Sleep 2.5s
 
-# ── 2. Fuzzy find — open another file ──────────────────────────────────────
+# ── 2. Fuzzy find files (Ctrl+p → type → select) ──────────────────────────
+# Shows: IDE-level file navigation — fuzzy match + live preview.
 Ctrl+p
 Sleep 1s
-Type "utils"
-Sleep 1.2s
-Enter
-Sleep 2s
-
-# ── 3. Ripgrep — search + jump to result ───────────────────────────────────
-Type ",rg"
-Sleep 1s
-Type "greet"
+Type "route"
 Sleep 1.5s
 Enter
 Sleep 2s
 
-# ── 4. Run file ────────────────────────────────────────────────────────────
-# reset to app.py (known state)
-Type ":edit app.py"
+# ── 3. Ripgrep project search (,rg → query → select) ──────────────────────
+# Shows: grep entire project with preview — like VS Code Ctrl+Shift+F.
+Type ",rg"
+Sleep 1s
+Type "def "
+Sleep 1.5s
+Enter
+Sleep 2s
+
+# ── 4. Run file (,cr) ─────────────────────────────────────────────────────
+# Shows: one-key execution — no switching to terminal.
+Type ":edit server.py"
 Enter
 Sleep 1s
 Type ",cr"
@@ -42,15 +47,10 @@ Sleep 3s
 Enter
 Sleep 1s
 
-# ── 5. Git log ─────────────────────────────────────────────────────────────
-Type ",gL"
-Sleep 2.5s
-Type "q"
-Sleep 1s
-
-# ── 6. Cheat sheet ─────────────────────────────────────────────────────────
+# ── 5. Cheat sheet (,?) ───────────────────────────────────────────────────
+# Shows: it's discoverable — every keybinding in one sidebar.
 Type ",?"
-Sleep 3.5s
+Sleep 4s
 Type "q"
 Sleep 0.5s