fix(logging): render AUR progress animations to clean logs via terminal emulator

pacman/paru download progress is a multi-line terminal animation: it
repaints lines in place using ANSI cursor-movement (ESC[<n>A) and
erase-line (ESC[K) sequences, not just carriage returns. The previous
line-wise regex approaches could not reconstruct this — frames either
concatenated into one giant line (CR removed) or collapsed to blanks
(CR kept), discarding the final 100% frame.

Add scripts/clean_progress_log.py, a small dependency-free terminal
screen-buffer emulator that replays the cursor movements against an
in-memory grid and dumps the final static frame, preserving SGR color
so logs still render with color in ov/bat/less -R. It also drops the
script(1) header/footer.

Both wrappers now pipe the raw PTY capture through this cleaner (bumped
to version 5), falling back to stripping only the script(1) header when
python3 is unavailable. Document the scripts/ dir and mechanism in
AGENTS.md and docs/fish-config.md.

docs/fish-config.md

@@ -60,6 +60,9 @@ The configuration is split across:
     completions/              Tab completion scripts
     integrations/
       fzf.fish                FZF Catppuccin theme and key binding config
+    scripts/
+      clean_progress_log.py   Renders script(1) typescripts (paru/yay progress
+                              animations) to clean static logs, preserving color
     docs/                     Offline documentation and compiled man page
       fish-config.md          Primary source manual (terminal-readable)
       fish-config.1           Compiled man page (auto-generated by CI)
@@ -216,8 +219,13 @@ scrollback snapshot to SCROLLBACK_HISTORY_DIR. Files are named:
 
     scrollback_YYYY-MM-DD_HH-MM-SS.log
 
-The paru and yay wrappers (auto-generated in ~/.local/bin/) run inside a PTY
-via script(1) so progress bars are preserved, and capture all output to:
+The paru and yay wrappers (auto-generated in ~/.local/bin/) run the command
+inside a PTY via script(1) so download progress bars are preserved on screen,
+then render the captured terminal animation down to a clean static log via
+scripts/clean_progress_log.py (a small terminal-screen emulator that replays
+cursor movements, collapses repainted progress frames to their final state,
+and preserves ANSI color). If python3 is unavailable the wrapper falls back to
+dropping only the script(1) header/footer. Output is saved to:
 
     paru_YYYY-MM-DD_HH-MM-SS.log
     yay_YYYY-MM-DD_HH-MM-SS.log