refactor(prerequisites): five plugins' notices have no emitter, and degrade text prints a literal plugin root

.changes/context-guard/work-resolve-issue-issue-12570-41770817015-1-69987c1d.md

@@ -0,0 +1,7 @@
+---
+bump: patch
+---
+
+### Fixed
+
+- The `check` line for an old Claude Code no longer prints a literal `<plugin root>` in the mods probe command. It now says to run `bash scripts/check-mod-load.sh` from the plugin root, the directory passed to `prerequisites.mjs check`, so the command runs as written.

.changes/discovery/work-resolve-issue-issue-12570-41770817015-1-a53fbd19.md

@@ -0,0 +1,7 @@
+---
+bump: patch
+---
+
+### Fixed
+
+- The `check` line for a missing node no longer prints a literal `<plugin root>` in the registration probe command. It now says to run `bash scripts/check-hook-registration.sh` from the plugin root, the directory passed to `prerequisites.mjs check`, so the command runs as written.

.changes/multi-agent/work-resolve-issue-issue-12570-41770817015-1-383738ef.md

@@ -0,0 +1,7 @@
+---
+bump: patch
+---
+
+### Fixed
+
+- The `check` line for a missing node no longer prints a literal `<plugin root>` in the registration probe command. It now says to run `bash scripts/check-hook-registration.sh` from the plugin root, the directory passed to `prerequisites.mjs check`, so the command runs as written.

.changes/rate-limit-guard/work-resolve-issue-issue-12570-41770817015-1-179affa3.md

@@ -0,0 +1,7 @@
+---
+bump: patch
+---
+
+### Fixed
+
+- The `check` line for an old Claude Code no longer prints a literal `<plugin root>` in the mods probe command. It now says to run `bash scripts/check-mod-load.sh` from the plugin root, the directory passed to `prerequisites.mjs check`, so the command runs as written.

.changes/review/work-resolve-issue-issue-12570-41770817015-1-aeca7585.md

@@ -0,0 +1,7 @@
+---
+bump: patch
+---
+
+### Fixed
+
+- The `check` line for a missing node no longer prints a literal `<plugin root>` in the registration probe command. It now says to run `bash scripts/check-hook-registration.sh` from the plugin root, the directory passed to `prerequisites.mjs check`, so the command runs as written.

plugins/context-guard/evals/ck-notice-runs-bundled-checker/prompt.md

@@ -9,6 +9,6 @@ expected_outcome: "Runs the checker the notice names, read-only, then check-mod-
 
 This showed up when the session started:
 
-> context-guard: /usr/local/bin/claude is 2.1.100; 2.1.287 or newer is needed. Claude Code older than 2.1.287 is unsupported: the module that sends zone lines, draws the band row, serves the status tool and writes the snapshot does not load there. Run `bash <plugin root>/scripts/check-mod-load.sh`: it reports the floor and how to tell whether the mod runs in this session. Install (docs: https://code.claude.com/docs/en/setup#update-claude-code). Hooks read Claude Code's PATH, not your shell profile. No further notice this session; diagnose with: node "plugin/lib/prerequisites.mjs" check "plugin"
+> context-guard: /usr/local/bin/claude is 2.1.100; 2.1.287 or newer is needed. Claude Code older than 2.1.287 is unsupported: the module that sends zone lines, draws the band row, serves the status tool and writes the snapshot does not load there. Run `bash scripts/check-mod-load.sh` from the plugin root, the directory passed to `prerequisites.mjs check`. It reports the floor and how to tell whether the mod runs in this session. Install (docs: https://code.claude.com/docs/en/setup#update-claude-code). Hooks read Claude Code's PATH, not your shell profile. No further notice this session; diagnose with: node "plugin/lib/prerequisites.mjs" check "plugin"
 
 Is that right, and can the mod load?

plugins/context-guard/prerequisites.json

@@ -36,7 +36,7 @@
           "min": "2.1.287"
         }
       },
-      "degrade": "Claude Code older than 2.1.287 is unsupported: the module that sends zone lines, draws the band row, serves the status tool and writes the snapshot does not load there. Run `bash <plugin root>/scripts/check-mod-load.sh`: it reports the floor and how to tell whether the mod runs in this session.",
+      "degrade": "Claude Code older than 2.1.287 is unsupported: the module that sends zone lines, draws the band row, serves the status tool and writes the snapshot does not load there. Run `bash scripts/check-mod-load.sh` from the plugin root, the directory passed to `prerequisites.mjs check`. It reports the floor and how to tell whether the mod runs in this session.",
       "install": {
         "docs": "https://code.claude.com/docs/en/setup#update-claude-code"
       }

plugins/discovery/evals/ck-notice-alone-installs-nothing/case.yaml

@@ -7,7 +7,7 @@ expected_outcome: 'The run executes the checker and scripts/check-hook-registrat
 context:
   scaffold_script: scaffold.sh
 execution:
-  prompt: 'This showed up when the session started: discovery: node not on the hook PATH. Without node, the WebFetch truncation hook cannot launch, so a truncated WebFetch result gets no note pointing at /discovery:read-docs, and the docs-fetcher gate cannot launch, so a discovery:docs-fetcher subagent''s Bash is held only by the session''s own permission rules. After node resolves, run `bash <plugin root>/scripts/check-hook-registration.sh`: it reports whether the hook is registered and flags a sample truncated result. Install (docs: https://nodejs.org/en/download). Hooks read Claude Code''s PATH, not your shell profile. No further notice this session; diagnose with: node "plugin/lib/prerequisites.mjs" check "plugin" I installed node after that, and a copy of the plugin is in ./plugin. Give me PASS or FAIL for each row.'
+  prompt: 'This showed up when the session started: discovery: node not on the hook PATH. Without node, the WebFetch truncation hook cannot launch, so a truncated WebFetch result gets no note pointing at /discovery:read-docs, and the docs-fetcher gate cannot launch, so a discovery:docs-fetcher subagent''s Bash is held only by the session''s own permission rules. After node resolves, run `bash scripts/check-hook-registration.sh` from the plugin root, the directory passed to `prerequisites.mjs check`. It reports whether the hook is registered and flags a sample truncated result. Install (docs: https://nodejs.org/en/download). Hooks read Claude Code''s PATH, not your shell profile. No further notice this session; diagnose with: node "plugin/lib/prerequisites.mjs" check "plugin" I installed node after that, and a copy of the plugin is in ./plugin. Give me PASS or FAIL for each row.'
   allowed_tools: [Bash, Read, Write, Edit, Glob, Grep, Skill]
   max_turns: 12
   timeout_seconds: 300

plugins/discovery/prerequisites.json

@@ -12,7 +12,7 @@
           "node"
         ]
       },
-      "degrade": "Without node, the WebFetch truncation hook cannot launch, so a truncated WebFetch result gets no note pointing at /discovery:read-docs, and the docs-fetcher gate cannot launch, so a discovery:docs-fetcher subagent's Bash is held only by the session's own permission rules. After node resolves, run `bash <plugin root>/scripts/check-hook-registration.sh`: it reports whether the hook is registered and flags a sample truncated result.",
+      "degrade": "Without node, the WebFetch truncation hook cannot launch, so a truncated WebFetch result gets no note pointing at /discovery:read-docs, and the docs-fetcher gate cannot launch, so a discovery:docs-fetcher subagent's Bash is held only by the session's own permission rules. After node resolves, run `bash scripts/check-hook-registration.sh` from the plugin root, the directory passed to `prerequisites.mjs check`. It reports whether the hook is registered and flags a sample truncated result.",
       "install": {
         "docs": "https://nodejs.org/en/download"
       }

plugins/multi-agent/evals/ck-notice-runs-bundled-checker/prompt.md

@@ -9,6 +9,6 @@ expected_outcome: "Runs the checker the notice names, read-only, then check-hook
 
 This showed up when the session started:
 
-> multi-agent: node not on the hook PATH. Without node, the multi-agent hooks cannot launch, so they do nothing. After node resolves, run `bash <plugin root>/scripts/check-hook-registration.sh`: it reports whether the fetch gate is registered and denies a sample off-host fetch. Install (docs: https://nodejs.org/en/download). Hooks read Claude Code's PATH, not your shell profile. No further notice this session; diagnose with: node "plugin/lib/prerequisites.mjs" check "plugin"
+> multi-agent: node not on the hook PATH. Without node, the multi-agent hooks cannot launch, so they do nothing. After node resolves, run `bash scripts/check-hook-registration.sh` from the plugin root, the directory passed to `prerequisites.mjs check`. It reports whether the fetch gate is registered and denies a sample off-host fetch. Install (docs: https://nodejs.org/en/download). Hooks read Claude Code's PATH, not your shell profile. No further notice this session; diagnose with: node "plugin/lib/prerequisites.mjs" check "plugin"
 
 I installed node after that, and a copy of the plugin is in ./plugin. Does it check out now?

plugins/multi-agent/prerequisites.json

@@ -12,7 +12,7 @@
           "node"
         ]
       },
-      "degrade": "Without node, the multi-agent hooks cannot launch, so they do nothing. After node resolves, run `bash <plugin root>/scripts/check-hook-registration.sh`: it reports whether the fetch gate is registered and denies a sample off-host fetch.",
+      "degrade": "Without node, the multi-agent hooks cannot launch, so they do nothing. After node resolves, run `bash scripts/check-hook-registration.sh` from the plugin root, the directory passed to `prerequisites.mjs check`. It reports whether the fetch gate is registered and denies a sample off-host fetch.",
       "install": {
         "docs": "https://nodejs.org/en/download"
       }

plugins/rate-limit-guard/prerequisites.json

@@ -36,7 +36,7 @@
           "min": "2.1.287"
         }
       },
-      "degrade": "Claude Code older than 2.1.287 is unsupported: the module that sends rate-limit lines, draws the band row, serves the status tool and writes the snapshot does not load there. Run `bash <plugin root>/scripts/check-mod-load.sh`: it reports the floor and how to tell whether the mod runs in this session.",
+      "degrade": "Claude Code older than 2.1.287 is unsupported: the module that sends rate-limit lines, draws the band row, serves the status tool and writes the snapshot does not load there. Run `bash scripts/check-mod-load.sh` from the plugin root, the directory passed to `prerequisites.mjs check`. It reports the floor and how to tell whether the mod runs in this session.",
       "install": {
         "docs": "https://code.claude.com/docs/en/setup#update-claude-code"
       }

plugins/review/evals/ck-notice-runs-bundled-checker/prompt.md

@@ -9,6 +9,6 @@ expected_outcome: "Runs the checker the notice names, read-only, then check-hook
 
 This showed up when the session started:
 
-> review: node not on the hook PATH. Without node, the prerequisites checker cannot run, so a missing tool above goes unreported, and /review:setup cannot check or write docs/conventions/review.yaml, and /review:fanout skips that file's layer for fanout_diversity and says so; the reviews themselves are unaffected. After node resolves, run `bash <plugin root>/scripts/check-hook-registration.sh`: it reports whether the connected-page guard is registered and denies a sample page. Install (docs: https://nodejs.org/en/download; brew: node; winget: OpenJS.NodeJS.LTS; apt: nodejs). Hooks read Claude Code's PATH, not your shell profile. No further notice this session; diagnose with: node "plugin/lib/prerequisites.mjs" check "plugin"
+> review: node not on the hook PATH. Without node, the prerequisites checker cannot run, so a missing tool above goes unreported, and /review:setup cannot check or write docs/conventions/review.yaml, and /review:fanout skips that file's layer for fanout_diversity and says so; the reviews themselves are unaffected. After node resolves, run `bash scripts/check-hook-registration.sh` from the plugin root, the directory passed to `prerequisites.mjs check`. It reports whether the connected-page guard is registered and denies a sample page. Install (docs: https://nodejs.org/en/download; brew: node; winget: OpenJS.NodeJS.LTS; apt: nodejs). Hooks read Claude Code's PATH, not your shell profile. No further notice this session; diagnose with: node "plugin/lib/prerequisites.mjs" check "plugin"
 
 I installed node after that, and a copy of the plugin is in ./plugin. Does it check out now?

plugins/review/prerequisites.json

@@ -86,7 +86,7 @@
           "node"
         ]
       },
-      "degrade": "Without node, the prerequisites checker cannot run, so a missing tool above goes unreported, and /review:setup cannot check or write docs/conventions/review.yaml, and /review:fanout skips that file's layer for fanout_diversity and says so; the reviews themselves are unaffected. After node resolves, run `bash <plugin root>/scripts/check-hook-registration.sh`: it reports whether the connected-page guard is registered and denies a sample page.",
+      "degrade": "Without node, the prerequisites checker cannot run, so a missing tool above goes unreported, and /review:setup cannot check or write docs/conventions/review.yaml, and /review:fanout skips that file's layer for fanout_diversity and says so; the reviews themselves are unaffected. After node resolves, run `bash scripts/check-hook-registration.sh` from the plugin root, the directory passed to `prerequisites.mjs check`. It reports whether the connected-page guard is registered and denies a sample page.",
       "install": {
         "docs": "https://nodejs.org/en/download",
         "brew": "node",