docs: add CLAUDE.md and clean up kora-light-client

[tilo-14]

Summary

• Add comprehensive CLAUDE.md documentation for kora-light-client following the repo's DOCS.md guidelines (integration workflow, packed accounts scheme, API reference, types, constants, compute budget guidance, compatibility notes)
• Remove dead code: NUM_MAX_POOL_ACCOUNTS, TOKEN_COMPRESSED_ACCOUNT_DISCRIMINATOR constants and unused hex dev-dependency
• Deduplicate DEFAULT_MAX_TOP_UP constant from 4 builder files into program_ids.rs
• Add missing test coverage for delegate paths and combined wrap+decompress batch orchestration

Test plan

• cd kora-light-client && cargo test — 51 tests pass (43 unit + 8 golden bytes)
• cd kora-light-client && cargo clippy — no warnings
• CLAUDE.md constants table matches program_ids.rs
• CLAUDE.md line counts match actual source files

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[coderabbitai]

Important

Review skipped

Review was skipped due to path filters

⛔ Files ignored due to path filters (17)

• kora-light-client/CLAUDE.md is excluded by none and included by none
• kora-light-client/Cargo.lock is excluded by !**/*.lock and included by none
• kora-light-client/Cargo.toml is excluded by none and included by none
• kora-light-client/src/account_select.rs is excluded by none and included by none
• kora-light-client/src/create_ata.rs is excluded by none and included by none
• kora-light-client/src/decompress.rs is excluded by none and included by none
• kora-light-client/src/error.rs is excluded by none and included by none
• kora-light-client/src/lib.rs is excluded by none and included by none
• kora-light-client/src/load_ata.rs is excluded by none and included by none
• kora-light-client/src/packed_accounts.rs is excluded by none and included by none
• kora-light-client/src/pda.rs is excluded by none and included by none
• kora-light-client/src/program_ids.rs is excluded by none and included by none
• kora-light-client/src/transfer.rs is excluded by none and included by none
• kora-light-client/src/types.rs is excluded by none and included by none
• kora-light-client/src/unwrap.rs is excluded by none and included by none
• kora-light-client/src/wrap.rs is excluded by none and included by none
• kora-light-client/tests/golden_bytes.rs is excluded by none and included by none

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch tilo/kora-light-client-docs

📝 Coding Plan

• Generate coding plan for human review comments

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