Remove forced "independent" framing injected during ecosystem-to-projects conversion

[Copilot]

When the repo was restructured from an integrated ecosystem into four separate projects, "independence" was over-applied as the primary identity of every component—repeated in titles, section headers, per-project bullets, integration scenario footers, and dedicated "Standalone Independence" sections. The result was redundant, tonally off, and buried the legitimate integration story.

Changes

Core framing

• README.md: Title Four Independent Projects → Four Projects; dropped 4× Independence: bullets under each project; ## Independent Projects, Optional Compatibility → ## Optional Integration
• music_industry_revolution.md: Removed the > Note: block that explicitly deprecated the integrated ecosystem document as a historical artifact in favor of the "independent" framing

Per-component READMEs (studio_pass, dimensional_radio, scouting_label, fusion_factory)

• Removed independent/standalone from overview paragraphs
• Removed ## Standalone Independence sections entirely; retained ### Optional Integration Opportunities content

Integration docs

• INTEGRATION_OPPORTUNITIES.md: Replaced ## Core Principle: Independence First with neutral framing; removed all 14 **Independence maintained:** subsections; Phase 1: Independent Launch → Phase 1: Initial Launch; rewrote conclusion
• CONTRIBUTING.md: Removed ## Important: Independent Projects section

Supporting docs (QUICK_START.md, ARCHITECTURE_OVERVIEW.md, LEGAL_FRAMEWORK.md, MARKET_RESEARCH.md)

• Removed gratuitous independent from project description intros and conclusions

Preserved

All semantically correct uses remain: independent artists/labels (industry term), independent contractor (legal term), independent scaling (microservices architecture), independent TSA/third party (cryptographic verification in VERIFY.md).

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