Rename default branch to main; update docs

CHANGELOG.md

@@ -4,6 +4,7 @@ All notable changes to this project are logged here, newest first. This file sta
 
 ## 2026-09-04
 
+- Changed: renamed the default branch from `master` to `main`, both locally and in `PORTAINER_DEPLOY.md`'s repository reference. The old name was just `git init`'s local fallback default, not a deliberate choice.
 - Added: `PORTAINER_DEPLOY.md`, a step-by-step guide for deploying this as its own stack in Portainer, pulled straight from the Gitea repo, including how to set environment variables through Portainer's UI since `.env` is not committed.
 - Changed: swapped `ANTHROPIC_API_KEY` from a personal key to a company-owned key.
 - Milestone: pushed the repo to Gitea at `https://primegit.primecontrols-dev.com/m.mabrey/sde-meeting-toolkit`.

PORTAINER_DEPLOY.md

@@ -12,7 +12,7 @@ Repo: `https://primegit.primecontrols-dev.com/m.mabrey/sde-meeting-toolkit.git`
 4. Name it `sde-meeting-toolkit`.
 5. Set **Build method** to **Repository**.
 6. Set **Repository URL** to `https://primegit.primecontrols-dev.com/m.mabrey/sde-meeting-toolkit.git`.
-7. Set **Repository reference** to `refs/heads/master`. The default branch is `master`, not `main`.
+7. Set **Repository reference** to `refs/heads/main`.
 8. Set **Compose path** to `docker-compose.yml`. This is the default path; the file sits at the root of the repo.
 9. Leave **Authentication** off. The repo does not need credentials to pull.