Fix COPR spec + point release-prepare at sync-manual-channels (#22)

* Fix COPR mock build: strip percent-signs from spec-file comments

v0.1.6's COPR build failed in mock (all 10 chroots) with:

  warning: Macro expanded in comment on line 5: %install lays
  error: Name field must be present in package: (main package)

Root cause: RPM specs do NOT treat `#` as escaping `%`. The macro
processor runs before the comment processor, so a `%macro` token
inside a comment gets expanded just like one in a directive. Two
comments in packaging/qn-bin.spec mentioned `%prep` and `%install`
to describe what those sections do. When RPM hit the `%install` in
line 5's comment it expanded it, corrupting the parser's preamble
state, and by the time RPM reached `Name: qn` on line 15 it had
lost context and emitted the misleading "Name field must be
present" error.

Fix: remove all `%`-prefixed macro mentions from comments and add a
note (without a `%` symbol) reminding future editors that the
character is unsafe in spec comments.

Belt-and-suspenders: every comment line in the spec is now grep-clean
of `%` entirely (`grep -nE '^#.*%' qn-bin.spec` → no matches), so any
future edit that accidentally reintroduces `%foo` in a comment gets
caught by a one-line lint.

This fix is forward-only: v0.1.6 already shipped to crates.io, GHCR,
.deb, and the GitHub Release. v0.1.7 will exercise the corrected COPR
spec and backfill COPR for the recent versions.

* Point release-prepare's tail at release-sync-manual-channels

After release-prepare's CI-wait succeeds, the maintainer's next move
is to sync the three manual channels (Homebrew tap, Scoop bucket,
AUR qn-bin). The tail message used to stop at "inspect the release" —
this adds a pointer to release-sync-manual-channels with the version
baked in for a clean copy-paste, plus a note that omitting the args
auto-detects the version from the latest tag.

Author: johnpmitsch

Justfile

@@ -470,3 +470,7 @@ release-prepare version yes="0":
   echo
   echo "Phase 1 complete. Inspect the release at:"
   echo "  https://github.com/$(gh repo view --json nameWithOwner -q .nameWithOwner)/releases/tag/v{{version}}"
+  echo
+  echo "Next: sync the manual channels (Homebrew, Scoop, AUR) by running"
+  echo "  just release-sync-manual-channels ~/qn {{version}}"
+  echo "(omit the args to auto-detect the version from the latest tag)."

packaging/qn-bin.spec

@@ -2,10 +2,16 @@
 #
 # This spec is built on COPR's mock chroots. The SRPM embeds both Linux
 # gnu tarballs (x86_64 + aarch64) cargo-dist published for this release;
-# %prep selects the right one for the chroot's arch and %install lays
-# the binary + docs into the buildroot. No Rust toolchain involved on
-# the COPR side — the binary inside the resulting RPM is bit-identical
-# to what ships in crates.io, Homebrew, .deb, AUR, and the GHCR image.
+# the prep section selects the right one for the chroot's arch and the
+# install section lays the binary + docs into the buildroot. No Rust
+# toolchain involved on the COPR side — the binary inside the resulting
+# RPM is bit-identical to what ships in crates.io, Homebrew, .deb, AUR,
+# and the GHCR image.
+#
+# Comments here intentionally avoid the percent-sign character entirely
+# — RPM expands macros inside comments at parse time, which corrupts
+# the parser state and causes downstream "Name field must be present"
+# errors that look unrelated.
 #
 # Built by .github/workflows/publish-copr.yml on each release. That
 # workflow pre-downloads both arch tarballs into ~/rpmbuild/SOURCES/
@@ -19,8 +25,8 @@ Summary: Command-line interface for the Quicknode SDK
 License: MIT
 URL:     https://github.com/quicknode/cli
 
-# Both arch tarballs ship in the SRPM. %prep picks one based on the
-# chroot's arch.
+# Both arch tarballs ship in the SRPM. The prep section picks one based
+# on the chroot's arch.
 Source0: https://github.com/quicknode/cli/releases/download/v%{version}/quicknode-cli-x86_64-unknown-linux-gnu.tar.xz
 Source1: https://github.com/quicknode/cli/releases/download/v%{version}/quicknode-cli-aarch64-unknown-linux-gnu.tar.xz