fix(autologin): keep retry backoff across failed login attempts

[chsami]

Problem

Follow-up to #1937. AutoLogin's escalating retry backoff (computeRetryBackoffSeconds, 5/15/60/300s with jitter) was effectively never applied to generic login failures (world full, login limit exceeded, no reply from the login server, ...).

LoginManager.login() returns right after pressing Enter. On the next 600 ms tick handleAttemptingLoginState saw GameState.LOGGING_IN, fell into the "not on login screen anymore" branch and called resetLoginState(), which zeroed retryCount and cleared lastLoginAttemptTime. When the client fell back to LOGIN_SCREEN, handleWaitingForLoginScreenState started a fresh login straight away as "attempt 1". AutoLogin therefore retried every few seconds, which is a likely path into the "Too many login attempts" lockout. maxLoginRetries and the extended sleep could never trigger for these failures either.

Change

• AutoLoginScript.handleAttemptingLoginState stays in ATTEMPTING_LOGIN while the client is in any state other than LOGIN_SCREEN (LOGGING_IN, LOADING, ...) instead of resetting. The watchdog check still runs first.
• Retry state is only reset on a confirmed LOGGED_IN (existing branch), on suppression, or after the extended sleep, as before.
• When the client returns to LOGIN_SCREEN without logging in, the attempt already counted at initiation stays counted, so the next retry waits computeRetryBackoffSeconds(retryCount, loginRetryDelay) and maxLoginRetries / extended sleep apply again.
• The fix(login): handle "Too many login attempts" lockout; stop AutoLogin fighting BreakHandler V2 #1937 lockout handling (waitForLoginLockout) is unchanged and still runs before the new game state check.
• Instant.now() takes an injectable Clock so the state machine can be unit tested. processAutoLoginStateMachine is package-private, and package-private getters expose the state and retry count for tests.
• AutoLogin plugin version 1.0.5 -> 1.0.6.

BreakHandler V2 was checked for the same pattern. Its LOGGING_IN state does not reset loginRetryCount. It waits for LOGGED_IN, a lockout, or a 10 s timeout and then returns to LOGIN_REQUESTED with the count kept, so its backoff already escalates. No change there.

Validation

• New AutoLoginRetryStateTest drives the state machine with injected GameState / login index sequences and a fake clock:
  • LOGIN_SCREEN -> LOGGING_IN -> LOGIN_SCREEN counts the failure and waits the backoff before attempts 2 and 3
  • LOGGING_IN -> LOADING -> LOGGED_IN resets retry state, and the next logout starts again from attempt 1
  • with the watchdog on, maxLoginRetries still moves to LOGIN_EXTENDED_SLEEP
  • the lockout screen (login index 33) uses the fix(login): handle "Too many login attempts" lockout; stop AutoLogin fighting BreakHandler V2 #1937 cooldown, and no retry happens during it
• With the old reset behaviour restored, the backoff test and the reset test fail.
• :client:runUnitTests: 2281 tests, 0 failures, 2 skipped. ClientThreadGuardrailTest passes and its baseline is unchanged.
• Live test with the shaded jar from this branch on an F2P account, world 383, normal flows only:
  • starting AutoLogin went LOGIN_SCREEN -> LOGGING_IN -> LOADING -> LOGGED_IN and logged Login successful. That line only appears from ATTEMPTING_LOGIN, so the script stayed in that state through LOGGING_IN.
  • a manual logout made AutoLogin log back in once, as "attempt 1", which confirms the reset after a successful login.
  • no failed logins were triggered on purpose.

Known gaps

• The failure and lockout paths are covered by unit tests only, not live, so the real account is never pushed towards a lockout.

🤖 Generated with Claude Code

https://claude.ai/code/session_01LjtEMzQHGuq4M1Mpqk9pPV

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Walkthrough

AutoLoginScript now uses an injectable clock for retry, watchdog, lockout, and extended-sleep timestamps. The state machine checks that LoginManager reports LOGIN_SCREEN before retry handling. The retry block no longer requires the previous client game-state condition, and the prior fallback state reset is removed. New tests cover retry backoff, extended sleep, retry-state reset, and lockout cooldown. The plugin descriptor version changes from 1.0.5 to 1.0.6.

Priority: ➖ Normal

Merge Risk: 🔵 Low · up to c9670

With the login watchdog disabled, auto-login could stay in a login attempt indefinitely if the client stalls while logging in or loading. This is a narrow edge case, and the rest of the change is sound, so the PR is mergeable with this noted.

Pre-merge checks | 4 | 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage		Docstring coverage is 20.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 20 functions across 3 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check		The title clearly and concisely describes the main change: preserving retry backoff across failed AutoLogin attempts.
Description check		The description directly explains the AutoLogin retry-state bug, the implemented fix, testing, and known validation gap.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

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Actionable comments posted: 1

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🤖 Prompt to fix review comments

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Inline comments:
Review comments at
@runelite-client/src/main/java/net/runelite/client/plugins/microbot/accountselector/AutoLoginScript.java:
- Around line 208-210: Update handleAttemptingLoginState to bound attempts that
remain in a non-LOGIN_SCREEN state when the watchdog is disabled. Preserve
ATTEMPTING_LOGIN retry state, but ensure the attempt exits after a finite limit
rather than returning indefinitely while the client is in LOGGING_IN or LOADING.

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📥 Commits

Reviewing files that changed from the base of the PR and between 0d27fe4 and c9670c4.

📒 Files selected for processing (3)

• runelite-client/src/main/java/net/runelite/client/plugins/microbot/accountselector/AutoLoginPlugin.java
• runelite-client/src/main/java/net/runelite/client/plugins/microbot/accountselector/AutoLoginScript.java
• runelite-client/src/test/java/net/runelite/client/plugins/microbot/accountselector/AutoLoginRetryStateTest.java

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