fix: normalize CRLF/CR line endings in all file readers

[ClaytonHunt]

Problem

All six extensions that read .md agent files or YAML configs use regex patterns like /^---\n…\n---\n/ and .split("\n") to parse frontmatter and config. On Windows, files often have CRLF line endings — these patterns silently fail, so agents don't load, teams don't activate, and rules don't apply, with no error message to indicate why.

Fix

Add .replace(/\r\n/g, "\n").replace(/\r/g, "\n") immediately after every readFileSync call, before any parsing occurs. This is a no-op for files that already use LF and only activates when CRLF or CR is present.

Files changed

File	Read site
agent-chain.ts	parseAgentFile(), agent-chain.yaml
agent-team.ts	parseAgentFile(), teams.yaml
cross-agent.ts	scanCommands(), scanAgents()
damage-control.ts	damage-control-rules.yaml
pi-pi.ts	before_agent_start → pi-orchestrator.md
system-select.ts	scanAgents()

10 one-liner changes across 6 files. Completely non-breaking for all existing LF users.

[Copilot]

Pull request overview

Normalizes Windows CRLF/legacy CR line endings to LF immediately after reading agent/config files so existing frontmatter regexes and split("\n") parsing behave consistently across platforms (especially Windows).

Changes:

• Normalize line endings (\r\n/\r) to \n after readFileSync in each extension that parses agent markdown or YAML.
• Apply the normalization at all relevant read sites (agent markdown scans/parsers, and YAML config reads).

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
extensions/system-select.ts	Normalizes agent .md file contents before frontmatter parsing during directory scan.
extensions/pi-pi.ts	Normalizes expert agent .md files and pi-orchestrator.md before frontmatter/template parsing.
extensions/damage-control.ts	Normalizes .pi/damage-control-rules.yaml content prior to YAML parsing.
extensions/cross-agent.ts	Normalizes discovered command/agent .md content before frontmatter parsing.
extensions/agent-team.ts	Normalizes agent .md files and teams.yaml prior to frontmatter/teams parsing.
extensions/agent-chain.ts	Normalizes agent .md files and agent-chain.yaml prior to frontmatter/chain parsing.

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