diff --git a/docs/assets/plc-demo.tape b/docs/assets/plc-demo.tape
deleted file mode 100644
index 37f09c3..0000000
--- a/docs/assets/plc-demo.tape
+++ /dev/null
@@ -1,55 +0,0 @@
-# Validator demo for the README (recorded against v0.2.0 with vhs 0.12.1).
-# Re-record: from an empty directory that holds a clone of this repository at ./plc-programming,
-#   run `vhs plc-programming/docs/assets/plc-demo.tape`. It writes plc-demo.gif to the current directory.
-# The hidden setup writes the buggy and the fixed pump.st. The "AI edit" step is scripted:
-# the fixed file is copied in off-screen and the diff shows the change. Both validator runs are real.
-Output plc-demo.gif
-
-Set Shell "bash"
-Set FontFamily "DejaVu Sans Mono"
-Set FontSize 13
-Set Width 800
-Set Height 480
-Set Padding 14
-Set Theme "Dracula"
-Set TypingSpeed 35ms
-Set WindowBar Colorful
-Set CursorBlink false
-
-Hide
-Type `export PS1='$ ' PROMPT_COMMAND= HISTFILE=/dev/null; printf '%b' 'FUNCTION_BLOCK FB_Pump\nVAR_INPUT\n    LevelHigh : BOOL;\n    LevelLow  : BOOL;\nEND_VAR\nVAR_OUTPUT\n    PumpOn : BOOL;\nEND_VAR\n\nIF LevelLow THEN\n    PumpOn := TRUE;\nELSIF LevelHigh THEN\n    PumpOn := FALSE;\n\nEND_FUNCTION_BLOCK\n' > pump.st.buggy; printf '%b' 'FUNCTION_BLOCK FB_Pump\nVAR_INPUT\n    LevelHigh : BOOL;\n    LevelLow  : BOOL;\nEND_VAR\nVAR_OUTPUT\n    PumpOn : BOOL;\nEND_VAR\n\nIF LevelLow THEN\n    PumpOn := TRUE;\nELSIF LevelHigh THEN\n    PumpOn := FALSE;\nEND_IF;\n\nEND_FUNCTION_BLOCK\n' > pump.st.fixed; mkdir -p before && cp pump.st.buggy pump.st && cp pump.st before/pump.st && touch -d '2026-11-10 09:00' pump.st before/pump.st && clear`
-Enter
-Sleep 500ms
-Show
-
-Type "cat -n pump.st"
-Sleep 300ms
-Enter
-Sleep 3.5s
-
-Type "python3 plc-programming/scripts/plc_validate.py pump.st"
-Sleep 300ms
-Enter
-Sleep 4s
-
-# Scripted AI edit: the fixed file is copied in off-screen; the diff below shows exactly what changed.
-Hide
-Type "cp pump.st.fixed pump.st && touch -d '2026-11-10 09:01' pump.st && clear"
-Enter
-Sleep 300ms
-Show
-
-Type "# AI edit (Claude Code + plc-programming): close the IF block"
-Sleep 400ms
-Enter
-Sleep 800ms
-
-Type "diff -u --color=always before/pump.st pump.st"
-Sleep 300ms
-Enter
-Sleep 4s
-
-Type "python3 plc-programming/scripts/plc_validate.py pump.st"
-Sleep 300ms
-Enter
-Sleep 4.5s