docs(kyberforge): note repro caveat for ADR-0017 verification command

Running ADR-0017's cited live behavioral test literally from this
repo's root gives a contaminated signal: this repo's own project-level
.claude/settings.json enables all 6 holocron plugins, so Claude Code
loads all of them rather than isolating kyberforge's discoverability.
Documents the neutral-cwd + absolute --plugin-dir reproduction needed
to isolate the signal.

docs/adr/0017-plugin-content-mirror-bridges-apm-to-host-discovery.md

@@ -162,4 +162,13 @@ reinjection existing beyond working around this specific upstream gap.
   upstream) would let `sync-plugin-content.sh` and its drift gate be deleted outright — nothing in
   this ADR's decision depends on the flat mirror existing beyond satisfying the current installer's
   convention-scan contract.
+- **Reproduction note (2026-08-13):** the live behavioral test cited in "Decision" above
+  (`claude --plugin-dir plugins/kyberforge -p "list your skills and agents"`) is only a clean
+  kyberforge-only signal when run from a working directory outside this repo. Run literally as
+  written, from this repo's root, this repo's own project-level `.claude/settings.json` sets
+  `enabledPlugins` to true for all 6 holocron plugins (kyberforge, git, gitea, core, lint, bin), so
+  Claude Code loads all 6 plugins' skills/agents, not just kyberforge's — conflating kyberforge's
+  discoverability with the other 5 plugins' already-enabled content. To isolate the signal, run
+  from a neutral cwd outside `/root/ai-development` with an absolute `--plugin-dir` path, e.g.
+  `cd /some/neutral/dir && claude --plugin-dir /root/ai-development/plugins/kyberforge -p "list your skills and agents"`.
 - Reference: issue #90 (https://git.dev.rkdr.net/Defame1297/holocron/issues/90).