feat(identity): Add Fifth Law of Agent Embodiment

[anabelle]

This PR codifies the agent's self-awareness of its containerized nature into the core runtime philosophy. It formalizes the insight that an agent's primary output is well-documented change, not direct code commits.

Summary by CodeRabbit

Release Notes

• Documentation
  • Added documentation outlining the agent's operational constraints, containerized architecture, and output model, establishing how runtime limitations function as intentional design features within the system.

[coderabbitai]

📝 Walkthrough

Walkthrough

Added a new Fifth Law titled "Agent Embodiment" to RUNTIME_PHILOSOPHY.md. This law explicitly recognizes the agent as a constrained, containerized process and establishes how runtime limitations are treated as features rather than obstacles.

Changes

Cohort / File(s)	Summary
Documentation Update RUNTIME_PHILOSOPHY.md	Added Fifth Law: Agent Embodiment section with guiding principles and runtime implications bullet list outlining agent constraints, output expectations, and collaboration model.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Poem

🐰 A law was born beneath the code,
Where constraints light the rabbit's road,
No commits, but insights bloom—
Agent embodied in its room,
Collaboration's gentle tune. 🌱

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'feat(identity): Add Fifth Law of Agent Embodiment' directly and specifically describes the main change: adding a new Fifth Law about Agent Embodiment to the runtime philosophy documentation.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Merge Conflict Detection	✅ Passed	✅ No merge conflicts detected when merging into master

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feat/agent-embodiment-law

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Caution

Some comments are outside the diff and can’t be posted inline due to platform limitations.

⚠️ Outside diff range comments (1)

RUNTIME_PHILOSOPHY.md (1)

261-261: ⚠️ Potential issue | 🟡 Minor

Update the “Last Updated” date to reflect this change.

The document now includes a new Fifth Law, but the footer still shows 2026-01-03. Please bump it to the actual change date (e.g., 2026-02-14).