feat(directives): add 15 engagement-specific directives + tags.toml entries

conductor/directives/media_analysis_neutral_voice/meta.md

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+# media_analysis_neutral_voice
+
+## v1
+
+**Why this iteration:** New rule, no prior source. The neutral-voice principle from `neutral_language_for_doc_drift` applied to media analysis.
+**Source:** new rule
+
+---
+**Lifted:** 2026-07-05

conductor/directives/media_analysis_neutral_voice/v1.md

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+# Media analysis output uses neutral voice — value judgments about the source content are the user's call, not the agent's
+
+## What it says
+
+When an agent analyzes media content, the output MUST use neutral voice. The agent describes what the source says, summarizes the arguments, extracts the claims — but does NOT evaluate whether the source is "good," "bad," "right," "wrong," "compelling," or "unconvincing." Value judgments are the user's domain.
+
+## Why
+
+The agent is a tool for understanding content, not a critic. If the agent says "this is a compelling argument," the user's own judgment is preempted. The user wants the content extracted and organized; the user decides whether it is compelling.
+
+## See also
+
+- `conductor/directives/neutral_language_for_doc_drift` — neutral language for documentation drift (same principle)
+- `conductor/directives/no_performative_agreement_in_review` — no performative agreement (same principle)