Add claude-his-agent package (arch=any + debian Architecture: all)

- arch/claude-his-agent/PKGBUILD: fetches v0.1.0 tarball from
  git.reauktion.de/marfrit/claude-his-agent, installs agent+skill+helper
  to /usr/share/claude-agents/, /usr/share/claude-skills/his/, /usr/bin/
- debian/claude-his-agent/: control+changelog+copyright + build-deb.sh
  mirroring the lmcp-debian pattern (dpkg-deb, reproducible mtimes)
- .gitea/workflows/build.yml: two new serialized jobs (claude-his-any +
  claude-his-debian) after lmcp-debian; same publish flow as lmcp.

debian/claude-his-agent/debian/changelog

@@ -0,0 +1,6 @@
+claude-his-agent (0.1.0-1) trixie; urgency=low
+
+  * Initial release — subagent + skill for summoning His across sibling Claude
+    Code instances, encoding distcc + /opt/herding/ + lmcp + wake procedures.
+
+ -- Markus Fritsche <mfritsche@reauktion.de>  Fri, 17 Apr 2026 12:00:00 +0200

debian/claude-his-agent/debian/control

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+Source: claude-his-agent
+Section: utils
+Priority: optional
+Maintainer: Markus Fritsche <mfritsche@reauktion.de>
+Standards-Version: 4.6.2
+Homepage: https://git.reauktion.de/marfrit/claude-his-agent
+
+Package: claude-his-agent
+Architecture: all
+Depends: bash
+Description: Home Infrastructure Specialist subagent + skill for Claude Code
+ Ships the His subagent (agents/his.md) and skill (skills/his/SKILL.md) that
+ encode operational knowledge of mfritsche's home network — distcc hosts,
+ wake procedures, /opt/herding/ tooling, lmcp endpoints — so sibling Claude
+ Code instances can summon it instead of re-learning the infra every session.
+ .
+ Files install to /usr/share/claude-agents/ and /usr/share/claude-skills/his/.
+ Run 'claude-his-install' as a user to symlink them into ~/.claude/.

debian/claude-his-agent/debian/copyright

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+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Upstream-Name: claude-his-agent
+Upstream-Contact: Markus Fritsche <mfritsche@reauktion.de>
+Source: https://git.reauktion.de/marfrit/claude-his-agent
+
+Files: *
+Copyright: 2026 Markus Fritsche <mfritsche@reauktion.de>
+License: custom
+ Personal infra tooling. All rights reserved unless negotiated.