ffmpeg-v4l2-request-fourier: route H.264 luma-h deblock through daedalus-fourier (0008)

Adds patch 0008 to the substitution arc, mirroring 0005's V variant
for H.264 non-intra bS<4 horizontal luma deblock.

  H264DSPContext.h_loop_filter_luma →
    daedalus_recipe_dispatch_h264_deblock_luma_h

The H kernel was added to daedalus-fourier in PR #9 (vendored
ff_h264_h_loop_filter_luma_neon, wired through the same CPU-dispatch
pattern as V).  Recipe table routes AUTO to CPU NEON (no QPU shader
for H yet), so this is a NEON-to-NEON substitution via the daedalus
recipe layer — same shape as 0005.

The libavcodec.so ctx remains no-QPU (daedalus_ctx_create_no_qpu),
matching the existing 0003/0004/0005/0007 patches.  Higher-cycle
QPU init waits for a feature-flag gating change in a separate PR.

Intra (bS=4) h_loop_filter_luma_intra stays on the in-tree NEON .S
code; daedalus_h264_deblock_meta covers the non-intra path only.
A follow-up can route intra once daedalus-fourier exposes the
intra-h dispatch (the kernel already exists internally per fourier
PR #11).

Wires the new patch into both arch/PKGBUILD and debian/build-deb.sh
sequences.  Verified the patch applies cleanly on top of 0001-0007
against the pinned upstream commit b57fbbe5 on hertz.

arch/ffmpeg-v4l2-request-fourier/PKGBUILD

@@ -94,8 +94,9 @@ source=("git+https://github.com/Kwiboo/FFmpeg.git#commit=${_commit}"
         '0004-h264-idct8-daedalus-fourier.patch'
         '0005-h264-deblock-luma-v-daedalus-fourier.patch'
         '0006-h264-restore-low-delay.patch'
-        '0007-h264-qpel-mc20-daedalus-fourier.patch')
-sha256sums=('SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP')
+        '0007-h264-qpel-mc20-daedalus-fourier.patch'
+        '0008-h264-deblock-luma-h-daedalus-fourier.patch')
+sha256sums=('SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP')
 
 pkgver() {
   cd "${_srcname}"
@@ -113,6 +114,7 @@ prepare() {
   patch -Np1 -i "${srcdir}/0005-h264-deblock-luma-v-daedalus-fourier.patch"
   patch -Np1 -i "${srcdir}/0006-h264-restore-low-delay.patch"
   patch -Np1 -i "${srcdir}/0007-h264-qpel-mc20-daedalus-fourier.patch"
+  patch -Np1 -i "${srcdir}/0008-h264-deblock-luma-h-daedalus-fourier.patch"
 }
 
 build() {