build(solana,sui): auto-generate presets/mod.rs from filesystem to eliminate per-PR conflicts

[prasanna-anchorage]

Why this PR exists

Every PR that adds a preset to visualsign-solana (and visualsign-sui) edits src/chain_parsers/visualsign-{solana,sui}/src/presets/mod.rs to add a single pub mod <name>; line at the alphabetically-correct position. Two preset PRs whose names land in adjacent slots collide on the same hunk during rebase.

This just bit us on the Kyle PR rebase batch:

• add Jupiter Earn preset #256 (jupiter_earn) hit a 2-hunk conflict (added line vs main's new dflow_aggregator, plus a second hunk on the rename-to-Earn commit).
• feat: add Jupiter Borrow Solana visualizer preset #263 (jupiter_borrow) hit the same shape.
• 11 more preset PRs are queued; the conflict cost compounds.

What changed

Extends each crate's build.rs to also emit OUT_DIR/generated_presets_mod.rs (and the integrations equivalent), containing one #[path = "<abs>/mod.rs"] pub mod <name>; per subdirectory, sorted alphabetically. The hand-edited presets/mod.rs becomes a single-line include!(concat!(env!("OUT_DIR"), ...)) stub plus a doc header saying "do not edit". Adding a new preset is now a directory drop-in — no mod.rs edit, no conflict surface.

The #[path] attributes are required: include! makes Rust resolve pub mod declarations relative to the included file (OUT_DIR), not the file invoking include!. Absolute paths derived from CARGO_MANIFEST_DIR keep the generated file build-portable across machines and CI.

Both build.rs files are now Result-returning (fn main() -> BuildResult<()>) with ?/ok_or_else propagation throughout — no unwrap()/expect(), no #[allow(clippy::unwrap_used)] workspace-lint dodge.

Test plan

• cargo build -p visualsign-solana and -p visualsign-sui succeed
• cargo clippy --workspace --all-targets -- -D warnings is clean
• cargo test --workspace --lib (369 tests) passes
• cargo fmt --check is clean
• Generated target/debug/build/visualsign-solana-*/out/generated_presets_mod.rs lists every preset directory sorted alphabetically with absolute #[path]

Knock-on for in-flight PRs

Open Kyle preset PRs (#256, #257, #258, #261, #263, #264, #265, #266, #267, #269, #270, #276) will need one more rebase after this lands; the presets/mod.rs conflict on each resolves to dropping the PR's pub mod <name>; line entirely. After that, no more rebase conflicts on this file ever.

Why draft

So you can review the build.rs rewrite (Result-propagating + #[path] mechanism) before promoting / merging.

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR moves the Solana and Sui parser crates from hand-maintained presets/mod.rs / integrations/mod.rs files to build-generated module declarations, reducing merge conflicts when new presets or integrations are added while keeping build-time visualizer discovery intact.

Changes:

• Refactors both build.rs files to return Result, generate generated_presets_mod.rs / generated_integrations_mod.rs, and keep the existing generated visualizer registry flow.
• Replaces hand-edited presets/mod.rs stubs in both crates with include!-based generated module declarations.
• Replaces hand-edited integrations/mod.rs stubs in both crates with the same generated-module pattern.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/chain_parsers/visualsign-sui/src/presets/mod.rs	Replaces manual Sui preset module list with generated include stub and guidance comments.
src/chain_parsers/visualsign-sui/src/integrations/mod.rs	Replaces manual Sui integration module wiring with generated include stub.
src/chain_parsers/visualsign-sui/build.rs	Adds generated module-declaration output alongside the existing generated visualizer list.
src/chain_parsers/visualsign-solana/src/presets/mod.rs	Replaces manual Solana preset module list with generated include stub and guidance comments.
src/chain_parsers/visualsign-solana/src/integrations/mod.rs	Replaces manual Solana integration module wiring with generated include stub.
src/chain_parsers/visualsign-solana/build.rs	Refactors build script error handling and generates module declarations for presets/integrations.

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