fix(maps): fix multi-fragment AIS decoding and bound AISComm history size

[Copilot]

Addresses three review comments from PR #5353 review #4358925311: multi-fragment AIS messages were silently dropped, AISComm history grew without bound, and the class documentation referenced outdated API names.

AISDecoder: stateful Vdm accumulator for multi-fragment messages

Previously, parsePayload called String.toAisMessage() which constructed a fresh Vdm() per line. Multi-part AIS sentences (type 1–3 fragments) never accumulated enough state to satisfy isCompletePacket, so they were silently dropped.

Now a single vdmAccumulator is threaded through the line loop via a new Vdm.parseSentence() helper. It resets on recoverable errors (invalid checksum, out-of-sequence) and resets + emits on a complete packet:

// Before: new Vdm per line — multi-fragment messages never complete
return payload.lines().mapNotNull { line ->
    ...
    else -> line.toAisMessage()?.let { message -> currentTimestamp to message }
}

// After: single accumulator persists across lines
var vdmAccumulator = Vdm()
return buildList {
    for (line in payload.lines()) {
        ...
        else -> vdmAccumulator = vdmAccumulator.parseSentence(line) { message ->
            add(currentTimestamp to message)
        }
    }
}

No ThreadLocal is used; state is purely local to the function call.

AISComm: bounded history with null for unlimited

Changed maxSize: Int = Int.MAX_VALUE → maxSize: Int? = 100. Default is now 100 retained payloads; pass null to retain all. trim() skips the size check when maxSize is null.

AISComm: KDoc aligned to actual API

Updated class documentation to reflect the actual exposed properties (history, currentData, vesselId) — the previously referenced receivedPayloads and AISMessageParser no longer exist in the implementation.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 61.53%. Comparing base (584621f) to head (7d3fc85).

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #5365   +/-   ##
=========================================
  Coverage     61.53%   61.53%           
  Complexity       14       14           
=========================================
  Files             2        2           
  Lines            78       78           
  Branches          4        4           
=========================================
  Hits             48       48           
  Misses           24       24           
  Partials          6        6           

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[DanySK]

@copilot rebase this pr on top of branch feat/ais

[mergify]

Hi @Copilot! 👋
This pull request has conflicts 😖
Could you fix it? 🔧
Thank you! 🙏

[Copilot]

@copilot rebase this pr on top of branch feat/ais

Done. The branch now has feat/ais (25d59c59a) as an ancestor via merge commit 81d19a9bd. The PR diff against feat/ais shows only the review-comment fixes (multi-fragment AIS decoding, bounded history, KDoc updates).

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud