Fixes #29. /claim #29

Also addresses #34. /claim #34

Closes #34

Adds a pipeline phase that aligns nearby same-net trace segments onto a shared X or Y coordinate when their ranges overlap. This runs after overlap shifting and before net label placement so later stages consume the cleaned-up traces.

The alignment solver:

• handles horizontal and vertical interior segments
• preserves trace endpoints connected to pins
• skips different-net segments
• rejects a candidate move if it would introduce a coincident overlap with another net

Review proof:

• Strong focused behavior MP4: https://github.com/digzrow-coder/schematic-trace-solver/releases/download/pr-306-demo-20260514/pr-306-same-net-alignment-strong-demo.mp4
• Strong focused behavior GIF: https://github.com/digzrow-coder/schematic-trace-solver/releases/download/pr-306-demo-20260514/pr-306-same-net-alignment-strong-demo.gif
• Strong contact sheet: https://github.com/digzrow-coder/schematic-trace-solver/releases/download/pr-306-demo-20260514/pr-306-strong-contact-sheet.jpg
• Live Cosmos example34 pipeline run MP4: https://github.com/digzrow-coder/schematic-trace-solver/releases/download/pr-306-demo-20260514/pr-306-example34-live-cosmos-demo.mp4
• Live Cosmos example34 GIF: https://github.com/digzrow-coder/schematic-trace-solver/releases/download/pr-306-demo-20260514/pr-306-example34-live-cosmos-demo.gif
• Live Cosmos contact sheet: https://github.com/digzrow-coder/schematic-trace-solver/releases/download/pr-306-demo-20260514/pr-306-live-cosmos-contact-sheet.jpg
• example34 before/after image: https://github.com/digzrow-coder/schematic-trace-solver/releases/download/pr-306-demo-20260514/example34-before-after-pr306.png
• example34 before SVG from origin/main: https://github.com/digzrow-coder/schematic-trace-solver/releases/download/pr-306-demo-20260514/example34-before-origin-main.svg
• example34 after SVG from this PR: https://github.com/digzrow-coder/schematic-trace-solver/releases/download/pr-306-demo-20260514/example34-after-pr306.svg

Verified locally:

• bun test tests/examples/example34.test.ts tests/solvers/SameNetTraceAlignmentSolver/same-net-trace-alignment-solver.test.ts (5 pass, 0 fail)
• Previous full local verification: bun test (61 passing, 4 skipped), bunx tsc –noEmit, bun run build, and bunx biome check lib/solvers/SameNetTraceAlignmentSolver/SameNetTraceAlignmentSolver.ts tests/solvers/SameNetTraceAlignmentSolver/same-net-trace-alignment-solver.test.ts lib/solvers/SchematicTracePipelineSolver/SchematicTracePipelineSolver.ts lib/index.ts

Algora claim for #29: https://algora.io/claims/cd492mGixrp6yZ5q

AI-assisted with OpenAI Codex; I reviewed the diff, proof assets, and validation output before posting.