fix: remove duplicate pinned toolchain components

[senamakel]

Summary

Remove the duplicate components key from rust-toolchain.toml after two toolchain fixes merged in succession. Rustup rejects the file before any release validation can run.

Related issue

None.

API or behavior changes

None.

Validation

• cargo fmt --all -- --check
• cargo metadata --locked --format-version 1 --no-deps
• Release failure: https://github.com/tinyhumansai/tinymemory/actions/runs/36035663923

Tests

No test code changed.

Documentation

The toolchain file now declares its components once.

Checklist

• The change is focused on the release failure
• No new #[allow(...)], #[ignore], or relaxed lints
• No secrets, tokens, or .env contents in the diff or the description

[coderabbitai]

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Review configuration:

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Advanced

Run ID: 87c2f5c2-c842-4e6c-a9c9-bd5533c5f82f

📥 Commits

Reviewing files that changed from the base of the PR and between 613d9f8 and f09569d.

📒 Files selected for processing (1)

• rust-toolchain.toml

---

_{Comment @coderabbitai help to get the list of available commands.}

[tinysweeper]

Tiny Sweeper review

Tiny Sweeper reviewed this change across 6 lane(s) and found 0 active actionable finding(s). Detailed lane evidence and any incomplete work are listed below.

State: Ready for maintainer review
Priority: none
Reviewed head: f09569d6ee72
Updated: 1790272396 (Unix time)

Review snapshot

Change surface	Files	Review signal	Count
Production	0	Active findings	0
Tests	0	Noted findings	0
Documentation	0	Resolved findings	0
Configuration	1	Pending checks/questions	0

Completeness: Complete
Test assessment: No supported feature-to-test mapping was available; this does not mean tests are absent or passed.

What changed

The review could not produce a supported behavioral summary; inspect the cited changed surface and lane details below.

Features

None identified with supported citations.

Tests

No supported feature-to-test mapping was produced. Test execution is not inferred.

Findings

No active actionable findings.

Before merge

None.

Agent review details

critique

• Conclusion: Neutral
• Scope reviewed: all assigned evidence
• Lane summary: No added or modified lines to review.

security

• Conclusion: Neutral
• Scope reviewed: all assigned evidence
• Lane summary: No added or modified lines to review.

tests

• Conclusion: Neutral
• Scope reviewed: all assigned evidence
• Lane summary: No added or modified lines to review.

commits

• Conclusion: Neutral
• Scope reviewed: all assigned evidence
• Lane summary: Nothing sensitive found in what this pull request commits.

description

• Conclusion: Neutral
• Scope reviewed: all assigned evidence
• Lane summary: No added or modified lines to review.

e2e

• Conclusion: Neutral
• Scope reviewed: all assigned evidence
• Lane summary: No added or modified lines to review.

Evidence and run details

• Models: ladder/vectors, deepseek-v4-flash
• Spend: $0.000041
• Tokens: 1011 input · 632 output · 0 cached · 28 embedding

Head	State	Pass summary
f09569d6ee72	ready for maintainer review	0 active finding(s), 0 resolved finding(s) (at 1790272396)

[tinysweeper]

tinysweeper found nothing blocking. Approving.

$0.0000 · 1,011 in / 632 out · 0 cached (0%) · 28 embedded · ladder/vectors, deepseek-v4-flash