feat(yt-dlp): add wrapper with embedding + SponsorBlock defaults

Add functions/yt-dlp.fish, shadowing yt-dlp to prepend sane defaults
(--sponsorblock-remove all, --embed-subs, --embed-metadata,
--embed-thumbnail). Each default is suppressed when the user already
passes that flag, its alias (--add-metadata), its negation
(--no-embed-thumbnail), the --opt=value form (--sponsorblock-remove=...),
or the global --no-sponsorblock kill. User args pass through last so an
explicit flag wins on precedence. Gated as a C1 opinionated alias;
falls back to bare `command yt-dlp` when disabled.

Register yt-dlp as a recommended (rec tier) dependency in the fish-deps
catalog and document the function (§5.13) and dependency in the SSOT
and index.

docs/fish-config.index

@@ -151,6 +151,7 @@ superpowers=### superpowers
 media=## 5.13 Media and Utilities
 dng2avif=### dng2avif
 spark=### spark
+yt-dlp=### yt-dlp
 miscfns=## 5.14 Miscellaneous
 config-help=### config-help
 config-update=### config-update

docs/fish-config.md

@@ -923,7 +923,7 @@ Add -i (interactive confirmation) to destructive commands:
       Integrations  wakatime, tailscale
       Recommended   cargo, starship, uv, direnv, paru, yay, eza, lsd, bat,
                     btop, dust, duf, prettyping, ov, ripgrep, lazygit,
-                    lazydocker, trash, kitty, wezterm, python3
+                    lazydocker, trash, kitty, wezterm, python3, yt-dlp
 
     fish-deps
     fish-deps install
@@ -1277,6 +1277,21 @@ Add -i (interactive confirmation) to destructive commands:
     spark 1 1 2 5 14 42
     echo "3 7 2 9 1" | spark
 
+### yt-dlp
+
+    Synopsis:  yt-dlp [args...] URL [URL...]
+    Wraps yt-dlp, prepending sane defaults: --sponsorblock-remove all,
+    --embed-subs, --embed-metadata, and --embed-thumbnail. Each default
+    is suppressed when you already pass that flag, its alias, or its
+    negation (e.g. --no-embed-thumbnail drops the thumbnail default;
+    --no-sponsorblock or your own --sponsorblock-remove drops ours). All
+    other arguments pass through unchanged, and --help falls through to
+    real yt-dlp. Opinionated component (C1 aliases); when disabled it
+    passes straight through to the system yt-dlp.
+
+    yt-dlp dQw4w9WgXcQ
+    yt-dlp --no-embed-thumbnail dQw4w9WgXcQ
+
 ---
 
 ## 5.14 Miscellaneous
@@ -1522,6 +1537,9 @@ fish-deps manages these tools. Run `fish-deps` to check status, or
                 Note: uv does not provide python3 on PATH, and Arch's base
                 does not include it, so it is listed separately. All
                 consumers degrade gracefully without it.
+    yt-dlp      Video/media downloader; backs the yt-dlp wrapper function.
+                Optional — the wrapper falls back to the system yt-dlp and
+                the rest of the config works without it.
 
 ## Install Methods
 

functions/_fish_deps_catalog.fish

@@ -16,27 +16,27 @@ function _fish_deps_catalog
     set -g _fdc_bins \
         uv cargo fish starship fzf zoxide direnv paru yay \
         wakatime tailscale \
-        eza lsd bat btop dust duf prettyping ov rg lazygit lazydocker trash kitty wezterm python3
+        eza lsd bat btop dust duf prettyping ov rg lazygit lazydocker trash kitty wezterm python3 yt-dlp
 
     set -g _fdc_tiers \
         rec rec req rec req req rec rec rec \
         int int \
-        rec rec rec rec rec rec rec rec rec rec rec rec rec rec rec
+        rec rec rec rec rec rec rec rec rec rec rec rec rec rec rec rec
 
     set -g _fdc_cargo \
         "" "" "" starship "" zoxide "" "" "" \
         "" "" \
-        eza lsd bat "" du-dust "" "" ov ripgrep "" "" trashy "" "" ""
+        eza lsd bat "" du-dust "" "" ov ripgrep "" "" trashy "" "" "" ""
 
     set -g _fdc_pm \
         uv cargo fish starship fzf zoxide direnv "" yay \
         wakatime tailscale \
-        eza lsd bat btop dust duf prettyping ov ripgrep lazygit lazydocker trash kitty wezterm python
+        eza lsd bat btop dust duf prettyping ov ripgrep lazygit lazydocker trash kitty wezterm python yt-dlp
 
     set -g _fdc_special \
         curl-uv rustup-installer git-cargo-fish curl-installer fzf-update "" "" paru-build yay-build \
         wakatime-binary "" \
-        "" "" "" "" "" "" "" "" "" "" curl-lazydocker "" "" "" ""
+        "" "" "" "" "" "" "" "" "" "" curl-lazydocker "" "" "" "" ""
 end
 
 # SYNOPSIS

functions/yt-dlp.fish

@@ -0,0 +1,61 @@
+# Copyright (C) 2026 Rootiest
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+# SYNOPSIS
+#   yt-dlp [args...] URL [URL...]
+#
+# DESCRIPTION
+#   Wraps yt-dlp, injecting sane embedding + SponsorBlock defaults
+#   (--sponsorblock-remove all, --embed-subs, --embed-metadata,
+#   --embed-thumbnail). Each default is suppressed if the user already
+#   passes that flag, its alias, or its negation (e.g. --no-embed-thumbnail
+#   drops our --embed-thumbnail). All other arguments pass through
+#   untouched. --help and friends fall through to real yt-dlp.
+#
+# ARGUMENTS
+#   args...  Arguments forwarded to yt-dlp (defaults prepended)
+#
+# EXAMPLE
+#   yt-dlp dQw4w9WgXcQ
+#   yt-dlp --no-embed-thumbnail dQw4w9WgXcQ   # drops our thumbnail default
+function yt-dlp --description 'yt-dlp with embedding + SponsorBlock defaults'
+    # Opinionated guard (C1): fall back to bare command yt-dlp when disabled.
+    if not __fish_config_op_enabled __fish_config_op_aliases
+        command yt-dlp $argv
+        return $status
+    end
+
+    set -l extra
+
+    # --embed-subs (skip if set or negated)
+    if not contains -- --embed-subs $argv
+        and not contains -- --no-embed-subs $argv
+        set -a extra --embed-subs
+    end
+
+    # --embed-thumbnail (skip if set or negated)
+    if not contains -- --embed-thumbnail $argv
+        and not contains -- --no-embed-thumbnail $argv
+        set -a extra --embed-thumbnail
+    end
+
+    # --embed-metadata (aliases: --add-metadata / --no-add-metadata)
+    if not contains -- --embed-metadata $argv
+        and not contains -- --add-metadata $argv
+        and not contains -- --no-embed-metadata $argv
+        and not contains -- --no-add-metadata $argv
+        set -a extra --embed-metadata
+    end
+
+    # --sponsorblock-remove all
+    # Skip if the user set their own remove (bare or --opt=value form), or
+    # disabled SponsorBlock entirely with --no-sponsorblock.
+    if not string match -q -- '--sponsorblock-remove' $argv
+        and not string match -q -- '--sponsorblock-remove=*' $argv
+        and not contains -- --no-sponsorblock $argv
+        set -a extra --sponsorblock-remove all
+    end
+
+    # User args last so an explicit flag wins any store_true/false precedence.
+    command yt-dlp $extra $argv
+end