fix: rewrite system task prompts to use injected memory instead of generic identity

[chubes4]

Summary

• System tasks already receive SOUL.md, MEMORY.md, USER.md via CoreMemoryFilesDirective (contexts ['all']), but the prompts were written as if the AI had zero context — re-introducing identity with generic "you are a system agent" framing that competed with the actual agent identity
• SystemAgentDirective: replaced "you are a system infrastructure specialist" with operational context that tells the AI its memory files are already loaded
• DailyMemoryTask: reframed from third-person "you are a system agent generating a daily memory entry for an AI agent's memory library" to first-person "write your own notes for future sessions"
• Memory cleanup: "clean up your MEMORY.md" instead of "you are maintaining an AI agent's MEMORY.md file"
• AltTextTask / MetaDescriptionTask: added "match the voice and tone of this site" / "use your knowledge of this site's voice" — actually leveraging the site knowledge that's already in the context
• InternalLinkingTask: tightened to direct task instructions

The core principle: the memory files define who the agent is — task prompts should give task instructions, not create a competing generic identity.

[github-actions]

Homeboy Results — data-machine

Lint

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Test

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Audit

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Tooling versions

• Homeboy CLI: homeboy 0.78.0+5b275f58
• Extension: wordpress from https://github.com/Extra-Chill/homeboy-extensions
• Extension revision: unknown
• Action: Extra-Chill/homeboy-action@v1

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Homeboy Action v1

[chubes4]

Superseded by #828 which includes all these prompt changes plus the full directive rename/refactor.