Fix duplicate organizations in selection prompt

[JoshSalway]

Summary

Fixes duplicate organizations appearing in the CLI org selection prompt when a user has authenticated multiple times.

Fixes #22

Root Cause Analysis

ConfigRepository::addApiToken() used ->push($token) without any deduplication. When a user runs cloud auth multiple times (common when tokens expire), the same token gets appended to config.json repeatedly:

// BEFORE (bug): just appends, no dedup
public function addApiToken(string $token): void
{
    $this->config["api_tokens"] = $this->apiTokens()->push($token);
    $this->save();
}

Then in HasAClient::resolveApiToken(), when there are multiple tokens, each token triggers a separate API call to $client->meta()->organization() to fetch the org name for the selection prompt. With 5 duplicate tokens, the same org is fetched 5 times and displayed 5 times in the picker.

How the bug was found and verified

We traced the flow from the org selection prompt back through HasAClient::resolveApiToken() → ConfigRepository::addApiToken(). Simulating 5 auth sessions with the same token against the original code produces:

{
    "api_tokens": [
        "755|example-token-abc123",
        "755|example-token-abc123",
        "755|example-token-abc123",
        "755|example-token-abc123",
        "755|example-token-abc123"
    ]
}

Token count: 5, Unique token count: 1 — each duplicate triggers a separate API call to fetch the org, so the picker shows the same organization 5 times.

After the fix, the same 5 auth sessions produce:

{
    "api_tokens": [
        "755|example-token-abc123"
    ]
}

Token count: 1 — org picker shows 1 entry as expected.

All 31 existing tests pass with this change (0 failures, 32 assertions).

Changes

• apiTokens() now returns ->unique()->values() — deduplicates on read (fixes existing bloated config files immediately)
• addApiToken() now chains ->unique()->values() after push() — prevents future duplicates from being written

Test plan

• Run cloud auth multiple times and verify ~/.config/cloud/config.json does not accumulate duplicate tokens
• Run any command that prompts for org selection (e.g. cloud environment:variables) and verify each organization appears only once
• Manually add duplicate tokens to config.json and verify they are deduplicated at read time (5 identical tokens → deduplicated to 1 → org appears once in picker)
• All existing tests pass: ./vendor/bin/pest → 31 passed, 32 assertions

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