SQC-792 add documentation for local hyperdrive environment files

[Ltadrian]

Summary

Screenshots (optional)

Documentation checklist

• Is there a changelog entry (guidelines)? If you don't add one for something awesome and new (however small) — how will our customers find out? Changelogs are automatically posted to RSS feeds, the Discord, and X.
• The change adheres to the documentation style guide.
• If a larger change - such as adding a new page- an issue has been opened in relation to any incorrect or out of date information that this PR fixes.
• Files which have changed name or location have been allocated redirects.

[sejoker]

/bonk review and address any findings.

[ask-bonk]

Several style and accuracy issues need fixing before merge. Posted 5 inline suggestions below.

[ask-bonk]

Two issues:

1. "a environment" → "an environment".
2. The precedence claim needs verification. Line 84 already states that environment variables take precedence over the Wrangler config. Does the .dev.vars file truly override a shell-exported environment variable? Wrangler typically loads .dev.vars as environment variables itself, so a shell-exported var would usually win. Please verify the actual precedence and clarify the full order (env file vs. env var vs. wrangler config) so readers are not confused.

Suggested change

	Setting with a environment variable file will have higher precedence and override any environment variable set on your machine.
	Values set in an environment file take precedence over environment variables set on your machine.

[ask-bonk]

Review posted. Here's a summary of what I flagged:

HIGH

• Precedence claim needs verification (line 62): The new section claims .dev.vars overrides shell environment variables. This conflicts with typical Wrangler behavior and needs confirmation. The page should also clarify the full precedence order (env file vs. env var vs. wrangler config) since line 84 already discusses env var vs. wrangler config precedence.

MEDIUM

• Style: first-person/future tense (lines 52-54): "we will allow" should be rewritten to describe current behavior in second person.
• Grammar: "a environment" (lines 54, 62): Should be "an environment" in both occurrences.
• Missing blank line after heading (line 51-52): Inconsistent with the rest of the page.
• Unnecessary <br/> (line 56): Not needed before a blank line and code block.

The good news: the fix on line 13 (adding the missing word "edge") is correct and welcome.

github run