Render schematic special-string values

[ShiboSoftwareDev]

Why

Altium schematic special strings can come from the .SchDoc, its .PrjPCB, or the active filenames. AltiumTS rendered those references literally, so valid strings such as =DocumentName, =ProjectRevision, and =ProjectDrawnBy remained visible even when their values were available.

What changed

• Resolve document parameters and let schematic rendering receive the current document name, project name, and parsed Altium project.
• Resolve both native .PrjPCB parameter encodings used by real Altium projects.
• Keep document parameters above project parameters, matching Altium's parameter precedence.
• Resolve the native DocumentName and ProjectName system strings from explicit filenames.
• Leave references unchanged when their context is genuinely unavailable.
• Add separate focused SVG snapshots for document parameters and project/system strings.

Verification

• focused SVG tests — 2 passed, 14 assertions
• bun run format:check
• bun run lint
• bun run typecheck
• bun run build
• all 117 locally available tests pass; the 61 TI-only tests require the CI fixture bundle

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Project	Deployment	Actions	Updated (UTC)
altiumts	Error		Aug 25, 2026 8:58pm

[tscircuitbot]

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Thank you for your contribution! 🎉

PR Rating: ⭐⭐
Impact: Minor

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