Add TweetClaw export mode

[kriptoburak]

Summary

• Add an offline TweetClaw export mode for scoring reviewed X data without a live token.
• Accept CSV, JSON, JSONL, and NDJSON exports and reuse MoodMonitor VADER scoring plus CSV output.
• Lazily import the live X client so local export scoring does not require live API client packages.

Validation

• Python compile passed for touched modules.
• Sample TweetClaw JSON export produced 2 scored rows and skipped 1 blank row.
• Diff check and README link check passed.

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Support TweetClaw reply text fields

In the TweetClaw/Xquik reply-export context, rows use tweetText in JSON/CSV exports and the documented JSONL handoff uses reply_text (see https://docs.xquik.com/guides/tweet-replies-export), but neither name is in TEXT_FIELDS. For those exports _first(source, TEXT_FIELDS) returns an empty string and the row is skipped, so valid reply exports produce a zero-row sentiment report; add the official reply text field names here before claiming TweetClaw export support.

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