Fix p2p module in mempooloracle

[tcrypt25519]

Fixes various errors and warnings in mempooloracle's p2p module and examples:

• Correctly retrieves the connection direction from network_handle.get_peer_by_id rather than a non-existent field on SessionInfo.
• Conditionally exposes the connect_with_config function when the reth-p2p feature is enabled and returns a FeatureDisabled error otherwise.
• Handles unused imports by moving them inside the module scope, removing them, or hiding behind cfg flags.
• Fixes cargo test failures related to the feature not being enabled by default. cargo test --features reth-p2p,consensus-p2p now compiles and runs completely successfully.
• Fixes a compilation error in cli_tool that omitted a ttfpt: bool argument by hardcoding false (default for that argument since it doesn't do anything).
• Simplified clippy code issues (such as iter().flatten(), collapsible if blocks, unused variables).

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PR created automatically by Jules for task 14553192464981682387 started by @tcrypt25519

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[semanticdiff-com]

Review changes with  

Changed Files

File	Status
crates/mempooloracle/src/transport/p2p.rs	94% smaller
crates/mempooloracle/src/runtime.rs	92% smaller
crates/mempooloracle/examples/cli_tool.rs	91% smaller
crates/mempooloracle/src/lib.rs	89% smaller
crates/bulkmail/src/adapter/solana.rs	67% smaller
crates/mempooloracle/tests/mempool_oracle.rs	51% smaller
.github/workflows/ci.yml	28% smaller

[gemini-code-assist]

Code Review

This pull request introduces conditional compilation for the reth-p2p feature, removes unused imports, and refactors several conditional blocks. A critical issue was identified regarding the use of let_chains (combining if let with &&), which is an unstable Rust feature and will cause compilation failures on stable toolchains. These instances should be reverted to nested if statements to maintain compatibility.

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crates/mempooloracle/src/lib.rs (387-390)

The use of let_chains (combining if let with &&) is an unstable Rust feature. This will break compilation on stable Rust toolchains. It is recommended to use nested if statements to maintain compatibility. This issue occurs in multiple places throughout the PR.

                    if let Ok(age) = now.duration_since(tx.seen_at) {
                        if age > one_hour {
                            keep = true;
                        }
                    }

crates/mempooloracle/src/transport/p2p.rs (718-722)

This is another instance of unstable let_chains usage. Please revert to nested if statements or use stable alternatives like is_some_and to ensure the code compiles on stable Rust.

                            if let Some(observed) = observed_block_from_beacon_block(block, peer_id) {
                                if let Some(last) = state.last_emitted_number {
                                    if observed.number > last {
                                        state.buffered.entry(observed.number).or_insert(observed);
                                    }
                                }
                            }