chore: update skill docs for new CLI features and add evals

[felipefreitag]

Skill references drifted behind the CLI — template send (--template, --var), --text-file flag, stdin support, natural language scheduling, broadcasts/templates open subcommands, and api-keys last_used_at were all undocumented. Add skill-evals/ for tracked eval cases outside the distributable skill package.

[cubic-dev-ai]

1 issue found across 8 files

Prompt for AI agents (unresolved issues)

Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="skills/resend-cli/references/workflows.md">

<violation number="1" location="skills/resend-cli/references/workflows.md:225">
P2: Use variable keys that match the template variable names in this recipe. The example currently defines `NAME`/`PLAN` but sends `name`/`plan`.</violation>
</file>

_{Reply with feedback, questions, or to request a fix. Tag @cubic-dev-ai to re-run a review.}

[cubic-dev-ai]

P2: Use variable keys that match the template variable names in this recipe. The example currently defines NAME/PLAN but sends name/plan.

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At skills/resend-cli/references/workflows.md, line 225:

<comment>Use variable keys that match the template variable names in this recipe. The example currently defines `NAME`/`PLAN` but sends `name`/`plan`.</comment>

<file context>
@@ -218,6 +218,12 @@ resend templates create \
+resend emails send \
+  --to user@example.com \
+  --template <template-id> \
+  --var name=Jane --var plan=pro
+
 # Duplicate for A/B testing
</file context>

Suggested change

	--var name=Jane --var plan=pro
	--var NAME=Jane --var PLAN=pro

[isabellaaquino]

minor: Heads up that from and subject fields are optional to templates, so they might no always exist