Build script `crates/support/methods/build.rs` writes to broken hard-coded paths

[cedoor]

Description for this issue with possible solution here: #1036 (comment)

[hmzakhalid]

Hey, I tried to solve this issue and the container script hard codes the contracts mount path (/contracts). This used to work with the CRISP layout, but it now fails (packages/crisp-contracts/contracts). The default template uses contracts/ at the root, so the mount works there, but it breaks if the structure changes to something like packages/contracts.

The build script (methods/build.rs) writes to hard-coded relative paths (../contracts/ImageID.sol, ../tests/Elf.sol), which means it expects /app/contracts and /app/tests inside the container.

Different projects use different layouts:

• CRISP: packages/crisp-contracts/contracts/
• Default template: contracts/
• Future projects: potentially other structures

Instead of keeping ImageID inside a contracts directory, we can store it in a standard location such as .enclave/generated/contracts/ and .enclave/generated/tests/, relative to the project root (where enclave.config.yaml lives). Users can then copy or symlink these files wherever they need them. This avoids having to detect the contracts directory automatically.