fix(cross-llm-pr-a): fix remaining guard violations — fence regex anchor, host blocks for prose tokens

Agent-Logs-Url: https://github.com/GoCodeAlone/claude-superpowers/sessions/94a635a0-4552-463a-9fe7-25ed11f8816e

Co-authored-by: intel352 <77607+intel352@users.noreply.github.com>

Author: Copilot

skills/alignment-check/SKILL.md

@@ -25,7 +25,7 @@ Invoked automatically by `writing-plans` in autonomous mode. Can also be invoked
 
 ## Dispatching the Alignment Agent
 
-Dispatch a Sonnet agent to perform the comparison:
+Dispatch a `balanced`-tier agent to perform the comparison:
 
 ```
 Agent tool (general-purpose, model: sonnet):

skills/executing-plans/SKILL.md

@@ -19,7 +19,10 @@ Load plan, review critically, execute tasks in batches, report for review betwee
 1. Read plan file
 2. Review critically - identify any questions or concerns about the plan
 3. If concerns: Raise them with your human partner before starting
-4. If no concerns: Create TodoWrite and proceed
+4. If no concerns: Create a task list and proceed
+<host: claude-code>
+   Use TodoWrite to create one todo per task.
+</host>
 
 ### Step 2: Execute Batch
 **Default: First 3 tasks**

skills/subagent-driven-development/SKILL.md

@@ -11,7 +11,10 @@ Execute plan using Agent Teams (default) or sequential subagents (fallback), wit
 
 ## Execution Mode Detection
 
-**Default: Agent Teams** — when TeamCreate tool is available and `CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS` is set.
+**Default: Agent Teams** — when the Agent Teams feature is available.
+<host: claude-code>
+Available when: TeamCreate tool is in your tool list and `CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS` is set.
+</host>
 
 **Fallback: Sequential Subagents** — when Agent Teams is not available. Uses the legacy one-subagent-at-a-time flow.
 
@@ -66,6 +69,7 @@ Read the plan file, extract all tasks with full text.
 
 **2. Create tasks in shared task list:**
 
+<host: claude-code>
 For each plan task, create a TaskCreate with:
 - `subject`: "Implement: <task name>"
 - `description`: Full task text from plan + design doc reference + context
@@ -74,6 +78,7 @@ For each plan task, create a TaskCreate with:
 Then create corresponding review tasks:
 - "Review spec: <task name>" (blockedBy: implement task)
 - "Review quality: <task name>" (blockedBy: spec review task)
+</host>
 
 **3. Spawn teammates:**
 
@@ -191,7 +196,9 @@ Agent tool:
 **4. Monitor and steer:**
 
 As team-lead, your job is now orchestration:
+<host: claude-code>
 - Monitor task completions via TaskList
+</host>
 - Reassign work if an implementer is stuck (DM them)
 - Answer implementer questions (they'll DM you)
 - Track overall progress
@@ -218,7 +225,10 @@ Invoke `superpowers:finishing-a-development-branch`.
 
 When Agent Teams is not available, fall back to the original sequential flow:
 
-1. Read plan, extract all tasks, create TodoWrite
+1. Read plan, extract all tasks
+<host: claude-code>
+   and create TodoWrite for task tracking
+</host>
 2. Per task:
    a. Dispatch implementer subagent (./implementer-prompt.md)
    b. Answer questions if any

tests/skill-content-grep.sh

@@ -62,15 +62,16 @@ find skills agents -type f -name '*.md' -print0 \
       #     because skill files often quote tool names as examples in code
       #     blocks. Opening fences may carry an info string (e.g. ```bash);
       #     closing fences are always bare (```). The toggle fires on any line
-      #     whose first non-whitespace characters are three backticks.
+      #     that is only optional whitespace, three backticks, an optional
+      #     alphanumeric/symbol info-string, and optional trailing whitespace.
       #   - Markers must occupy the whole line (only optional whitespace
       #     around the tag). A marker with trailing text is NOT recognised.
       #   - Emits "LINENO:content" for every non-skipped line.
       annotated="$(awk '
         BEGIN { skip = 0; fence = 0; ln = 0 }
         {
           ln++
-          if (/^[[:space:]]*```/) { fence = !fence; next }
+          if (/^[[:space:]]*```[a-zA-Z0-9_+-]*[[:space:]]*$/) { fence = !fence; next }
           if (fence) { next }
           if (/^[[:space:]]*<host:[[:space:]]*claude-code[[:space:]]*>[[:space:]]*$/) { skip = 1; next }
           if (/^[[:space:]]*<\/host>[[:space:]]*$/) { skip = 0; next }