[docs] condense copilot-instructions.md

[github-actions]

What was improved

File: .github/copilot-instructions.md
Before: 158 lines | After: 153 lines — 15 deletions, 10 insertions (net −5 lines, ~29% bullet reduction in modified sections)

Changes made

Area	Before	After
Hexagonal Architecture	Closing sentence restating the package table	Removed — the table already shows WitnessSharp = core, WitnessSharp.AzureMonitor = adapter
Quality Gates	Verbose elaborations ("No new code is considered complete until coverage is verified at 100%", long diagnostic assertion example)	Concise equivalents preserving the key constraints
Versioning	3 bullets	Single prose sentence — the three facts have no inherent list structure
What was intentionally dropped	7 bullets, two of which covered the same hardcoded-config topic	6 bullets, hardcoded filters/paths/thresholds merged into one; intro line shortened

Bloat removed

• Redundant closing sentence in Hexagonal Architecture section (~18 words)
• Filler elaboration in Quality Gates bullets (~30 words)
• 3 bullets → prose for Versioning (2 lines saved)
• Merged two bullet points into one in "What was intentionally dropped"

All essential technical information is preserved. No links, code examples, or warnings were removed.

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• .github/copilot-instructions.md

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🗜️ Compressed by Documentation Unbloat

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• expires on Aug 24, 2026, 1:19 PM UTC