move demo/ to docs/tutorial/, commit assets, consolidate TUI docs

- demo/ renamed to docs/tutorial/ (tapes, scripts, TUTORIAL.md)
- docs/tutorial/assets/ added to git (51 MB of GIFs + PNGs); removed
  /demo/assets/ from .gitignore so images render on Codeberg
- docs/tui-reference.md removed; its hotkey tables merged into a new
  "Hotkey Quick Reference" section at the end of TUTORIAL.md
- TUTORIAL.md: updated install section (mage buildDocker, no
  GOTOOLCHAIN=auto), fixed README relative path (../../README.md),
  updated internal tapes/scripts/assets path prose
- README.md: updated all demo/ image paths and links to docs/tutorial/;
  TUI and recording-modes links now point to TUTORIAL.md anchors
- AGENTS.md: updated demo/ references to docs/tutorial/
- Magefile.go: updated demoDir/demoTapesDir/demoScriptsDir/demoRunTape/
  demoSudoKeepers constants to docs/tutorial/ paths

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 10 insertions, 10 deletions

diff --git a/Magefile.go b/Magefile.go
index e9458b5..e675a8a 100644
--- a/Magefile.go
+++ b/Magefile.go
@@ -1159,18 +1159,18 @@ func runParquetChecks(dir, file string) error {
 
 // --- Demo (VHS-driven TUI recordings) ---------------------------------------
 //
-// Demo regenerates GIFs and PNG screenshots under demo/assets/ by running every
-// VHS tape under demo/tapes/. Each tape is wrapped by demo/scripts/run-tape.sh
-// which spins up the background workload generator. A sudo keep-alive loop in
-// the background of `mage demo` keeps the sudo timestamp warm so no tape ever
-// blocks on a password prompt.
+// Demo regenerates GIFs and PNG screenshots under docs/tutorial/assets/ by
+// running every VHS tape under docs/tutorial/tapes/. Each tape is wrapped by
+// docs/tutorial/scripts/run-tape.sh which spins up the background workload
+// generator. A sudo keep-alive loop keeps the sudo timestamp warm so no tape
+// ever blocks on a password prompt.
 
 const (
-	demoDir         = "demo"
-	demoTapesDir    = "demo/tapes"
-	demoScriptsDir  = "demo/scripts"
-	demoRunTape     = "demo/scripts/run-tape.sh"
-	demoSudoKeepers = "demo/scripts/sudo-keepalive.sh"
+	demoDir         = "docs/tutorial"
+	demoTapesDir    = "docs/tutorial/tapes"
+	demoScriptsDir  = "docs/tutorial/scripts"
+	demoRunTape     = "docs/tutorial/scripts/run-tape.sh"
+	demoSudoKeepers = "docs/tutorial/scripts/sudo-keepalive.sh"
 )
 
 // Demo regenerates every demo asset (full ~14-tape run, ~10 minutes).