Add comments to StringBodies circuit template

[rex1fernando]

Description

Type of Change

• New feature
• Bug fix
• Breaking change
• Performance improvement
• Refactoring
• Dependency update
• Documentation update
• Tests

Which Components or Systems Does This Change Impact?

• Validator Node
• Full Node (API, Indexer, etc.)
• Move/Aptos Virtual Machine
• Aptos Framework
• Aptos CLI/SDK
• Developer Infrastructure
• Other (specify)

How Has This Been Tested?

Key Areas to Review

Checklist

• I have read and followed the CONTRIBUTING doc
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I identified and added all stakeholders and component owners affected by this change as reviewers
• I tested both happy and unhappy path of the functionality
• I have made corresponding changes to the documentation

[trunk-io]

⏱️ 1h 19m total CI duration on this PR

Job	Cumulative Duration	Recent Runs
forge-compat-test / forge	15m	🟩
forge-e2e-test / forge	13m	🟩
execution-performance / test-target-determinator	9m	🟩 🟩
rust-doc-tests	5m	🟩
run-all-circuit-tests	5m	🟩
run-all-circuit-tests	5m	🟩
test-target-determinator	5m	🟩
check-dynamic-deps	5m	🟩 🟩 🟩
check	4m	⬜ 🟩
general-lints	4m	🟩 🟩
rust-cargo-deny	4m	🟩 🟩
rust-move-tests	2m	🟩
rust-move-tests	2m	🟩
semgrep/ci	1m	🟩 🟩 🟩
file_change_determinator	31s	🟩 🟩 🟩
file_change_determinator	25s	🟩 ⬜ 🟩
execution-performance / single-node-performance	20s	🟩 🟩
permission-check	14s	🟩 🟩 🟩
file_change_determinator	11s	🟩
permission-check	10s	🟩 🟩 🟩
forge-framework-upgrade-test / forge	9s	🟩
permission-check	8s	🟩 🟩 🟩
permission-check	8s	🟩 ⬜ 🟩
permission-check	6s	⬜ 🟩
Backport PR	3s	🟥
determine-docker-build-metadata	2s	🟩
permission-check	2s	🟩
rust-move-tests	1s	⬜
rust-doc-tests	1s	⬜

🚨 2 jobs on the last run were significantly faster/slower than expected

Job	Duration	vs 7d avg	Delta
forge-framework-upgrade-test / forge	9s	16m
execution-performance / single-node-performance	10s	20m

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[github-actions]

✅ Forge suite realistic_env_max_load success on f653f8da841049abe77d5a8e884695df98f32573

two traffics test: inner traffic : committed: 14400.29 txn/s, latency: 2757.23 ms, (p50: 2700 ms, p70: 2700, p90: 3000 ms, p99: 3300 ms), latency samples: 5475320
two traffics test : committed: 100.01 txn/s, latency: 1656.75 ms, (p50: 1500 ms, p70: 1600, p90: 1700 ms, p99: 7400 ms), latency samples: 1760
Latency breakdown for phase 0: ["QsBatchToPos: max: 0.233, avg: 0.221", "QsPosToProposal: max: 1.110, avg: 1.074", "ConsensusProposalToOrdered: max: 0.318, avg: 0.291", "ConsensusOrderedToCommit: max: 0.421, avg: 0.404", "ConsensusProposalToCommit: max: 0.708, avg: 0.695"]
Max non-epoch-change gap was: 0 rounds at version 0 (avg 0.00) [limit 4], 1.08s no progress at version 2970504 (avg 0.20s) [limit 15].
Max epoch-change gap was: 0 rounds at version 0 (avg 0.00) [limit 4], 8.57s no progress at version 2970502 (avg 8.57s) [limit 15].
Test Ok

• Grafana dashboard
• Humio Logs
• Axiom Logs
• Validator CPU Profile
• Fullnode CPU Profile
• Test runner output
• Test run is land-blocking

[github-actions]

✅ Forge suite compat success on 70806ff543496aa6de7807feff49e7e1370efd20 ==> f653f8da841049abe77d5a8e884695df98f32573

Compatibility test results for 70806ff543496aa6de7807feff49e7e1370efd20 ==> f653f8da841049abe77d5a8e884695df98f32573 (PR)
1. Check liveness of validators at old version: 70806ff543496aa6de7807feff49e7e1370efd20
compatibility::simple-validator-upgrade::liveness-check : committed: 14536.64 txn/s, latency: 2010.42 ms, (p50: 1900 ms, p70: 2100, p90: 2400 ms, p99: 3800 ms), latency samples: 550400
2. Upgrading first Validator to new version: f653f8da841049abe77d5a8e884695df98f32573
compatibility::simple-validator-upgrade::single-validator-upgrading : committed: 7789.20 txn/s, latency: 3638.52 ms, (p50: 4000 ms, p70: 4200, p90: 4300 ms, p99: 4400 ms), latency samples: 145400
compatibility::simple-validator-upgrade::single-validator-upgrade : committed: 7186.67 txn/s, latency: 4086.91 ms, (p50: 4300 ms, p70: 4300, p90: 4400 ms, p99: 5800 ms), latency samples: 271580
3. Upgrading rest of first batch to new version: f653f8da841049abe77d5a8e884695df98f32573
compatibility::simple-validator-upgrade::half-validator-upgrading : committed: 7014.05 txn/s, latency: 3963.61 ms, (p50: 4300 ms, p70: 4500, p90: 5000 ms, p99: 5100 ms), latency samples: 141480
compatibility::simple-validator-upgrade::half-validator-upgrade : committed: 7762.07 txn/s, latency: 4096.81 ms, (p50: 4100 ms, p70: 4300, p90: 6400 ms, p99: 6600 ms), latency samples: 260160
4. upgrading second batch to new version: f653f8da841049abe77d5a8e884695df98f32573
compatibility::simple-validator-upgrade::rest-validator-upgrading : committed: 11634.54 txn/s, latency: 2351.11 ms, (p50: 2500 ms, p70: 2700, p90: 2900 ms, p99: 3100 ms), latency samples: 203200
compatibility::simple-validator-upgrade::rest-validator-upgrade : committed: 11108.74 txn/s, latency: 2765.94 ms, (p50: 2600 ms, p70: 2900, p90: 4200 ms, p99: 5500 ms), latency samples: 365740
5. check swarm health
Compatibility test for 70806ff543496aa6de7807feff49e7e1370efd20 ==> f653f8da841049abe77d5a8e884695df98f32573 passed
Test Ok

• Grafana dashboard
• Humio Logs
• Axiom Logs
• Validator CPU Profile
• Fullnode CPU Profile
• Test runner output
• Test run is land-blocking