revise December 2024 maintenance retro articles
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<title id="title">Synthetic maintenance review timeline</title>
<desc id="desc">Горизонтальная последовательность T0 capture symptom, T1 draft one experiment, T2 recheck boundary, T3 decide stop continue or revise. Это учебный timeline без production change.</desc>
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<text x="58" y="70" fill="#172033" font-family="Arial, sans-serif" font-size="24" font-weight="700">Maintenance timeline: знание до change</text>
<text x="58" y="98" fill="#526174" font-family="Arial, sans-serif" font-size="17">T0–T3 — fixed teaching points, не история реальной системы</text>
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<text x="122" y="214" fill="#ffffff" font-family="Arial, sans-serif" font-size="15" font-weight="700">T0</text>
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<text x="566" y="214" fill="#ffffff" font-family="Arial, sans-serif" font-size="15" font-weight="700">T3</text>
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<text x="78" y="148" fill="#173f79" font-family="Arial, sans-serif" font-size="17" font-weight="700">capture symptom</text>
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<text x="226" y="285" fill="#28583c" font-family="Arial, sans-serif" font-size="17" font-weight="700">draft one</text>
<text x="226" y="307" fill="#28583c" font-family="Arial, sans-serif" font-size="16" font-weight="700">bounded experiment</text>
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<text x="374" y="148" fill="#704a09" font-family="Arial, sans-serif" font-size="17" font-weight="700">recheck evidence</text>
<text x="374" y="170" fill="#704a09" font-family="Arial, sans-serif" font-size="16" font-weight="700">and scope boundary</text>
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<text x="522" y="285" fill="#503481" font-family="Arial, sans-serif" font-size="17" font-weight="700">stop, continue</text>
<text x="522" y="307" fill="#503481" font-family="Arial, sans-serif" font-size="16" font-weight="700">or revise</text>
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<text x="82" y="376" fill="#172033" font-family="Arial, sans-serif" font-size="16" font-weight="700">Stop:</text>
<text x="128" y="376" fill="#334155" font-family="Arial, sans-serif" font-size="16">discard draft when scope grows or evidence is unproven.</text>
<text x="82" y="398" fill="#526174" font-family="Arial, sans-serif" font-size="15">No production rollback is implied.</text>
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