Cleanup from code review on 134

[AlexAxthelm]

• Document statement truncation
• document clearer make startup

[Copilot]

Pull request overview

This PR updates local developer documentation and in-code comments to clarify how query statements are normalized/truncated in the observability tooling, and to make make-based startup instructions more explicit.

Changes:

• Clarify that SQL statements are normalized and truncated (2000 char prefix) and how that affects query grouping in analysis output.
• Add an in-code note explaining the truncation tradeoff and pointing readers to the performance doc.
• Adjust docker-compose local comment to reference the make reboot-docker target explicitly.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
docker-compose.local.yml	Clarifies make startup command references in compose comments.
deployments/PERFORMANCE.md	Documents statement truncation behavior in query analysis output.
deployments/api/src/stitch/api/observability/query_timing.py	Adds explanatory comment about normalization/truncation and its impact on grouping.

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[github-actions]

CD summary 5f677d2

Frontend: https://witty-mushroom-017a3dc1e-139.westus2.1.azurestaticapps.net

Deployments (4)

service	url	fqdn
api	open	pr-139-api.purplegrass-c07d0a94.westus2.azurecontainerapps.io
entity-linkage	open	pr-139-entity-linkage.purplegrass-c07d0a94.westus2.azurecontainerapps.io
frontend	https://witty-mushroom-017a3dc1e-139.westus2.1.azurestaticapps.net
stitch-llm	open	pr-139-stitch-llm.purplegrass-c07d0a94.westus2.azurecontainerapps.io

Database (1)

db_name	postgres_host	postgres_port	postgres_db
pr_139	stitch-dev.postgres.database.azure.com	5432	pr_139

Jobs (2)

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db-migrations	ghcr.io/rmi/stitch-api:pr-139@sha256:e8bcff09174fe3b05dafb3792a5a8b18a69ef0b23b762c027d7e1bde4476dd19	pr_139
seed	ghcr.io/rmi/stitch-seed:pr-139@sha256:e013ea45f00406cb71a939cfc74958ab4dad05fe1c404967e5fd247d472299fb		https://pr-139-api.purplegrass-c07d0a94.westus2.azurecontainerapps.io/api/v1	stitch-client-bearer-token

Images (4)

build_time	commit_time	git_sha	image	image_digest
2026-06-18T14:33:45Z	2026-06-18T14:33:24Z	9a2c299	ghcr.io/rmi/stitch-api:pr-139	ghcr.io/rmi/stitch-api:pr-139@sha256:e8bcff09174fe3b05dafb3792a5a8b18a69ef0b23b762c027d7e1bde4476dd19
2026-06-18T14:33:46Z	2026-06-18T14:33:24Z	9a2c299	ghcr.io/rmi/stitch-entity-linkage:pr-139	ghcr.io/rmi/stitch-entity-linkage:pr-139@sha256:1f6a2edc84aedb96b015f5be7cbdbf9fc18af0e68864d7d18349f88e2255b6c5
2026-06-18T14:33:47Z	2026-06-18T14:33:24Z	9a2c299	ghcr.io/rmi/stitch-seed:pr-139	ghcr.io/rmi/stitch-seed:pr-139@sha256:e013ea45f00406cb71a939cfc74958ab4dad05fe1c404967e5fd247d472299fb
2026-06-18T14:33:49Z	2026-06-18T14:33:24Z	9a2c299	ghcr.io/rmi/stitch-stitch-llm:pr-139	ghcr.io/rmi/stitch-stitch-llm:pr-139@sha256:ae3752e0451341d5bc0359b554f37a76214532fa552ba837294347528eb48bce