Fix package-verify false negatives: symlink traversal + prefix collision

podman-verify-packages.sh/podman-update-packages.sh reported every
package as "not installed" right after a genuinely successful install.
Root cause: /var/log/packages is itself a symlink on Unraid (->
../lib/pkgtools/packages), and GNU find's default -P mode doesn't
descend into a symlinked starting path at all without -L — confirmed
live by running the exact same find both with and without -L against a
host where the packages had just installed successfully.

Fixing that alone surfaced a second, previously-masked bug: "podman"'s
own glob also matches podman-compose's file (a literal prefix
collision), and find's unsorted output let podman-compose's record
silently win podman's own check.

Both fixed once via a new shared podman_find_installed_package_record()
helper in podman-common.sh, rather than separately in each caller.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

CHANGELOG.md

@@ -9,6 +9,22 @@ see [docs/ARCHITECTURE.md](docs/ARCHITECTURE.md#52-build-strategie)).
 
 ## [Unreleased]
 
+### Fixed
+- `podman-verify-packages.sh`/`podman-update-packages.sh` reported every
+  single package as "not installed" right after a genuinely successful
+  install (confirmed live on a real v0.1.5 install: `/var/log/packages/`
+  had the correct records the whole time). Root cause:
+  `/var/log/packages` is itself a symlink on Unraid
+  (`-> ../lib/pkgtools/packages`), and GNU `find`'s default `-P` mode
+  doesn't descend into a symlinked starting path at all without `-L` —
+  it just returns the symlink itself and nothing below it. Fixed via a
+  new shared `podman_find_installed_package_record()` helper in
+  `podman-common.sh`, which also fixes a second bug found while testing
+  the first fix: "podman"'s own glob also matched podman-compose's file
+  (a literal prefix collision), and `find`'s unsorted output let
+  podman-compose's record silently win podman's own check on the same
+  real host.
+
 ## [0.1.5] - 2026-07-13
 
 ### Added