Seed batch 1: five missing lectures (Opus 4.8 calibration batch)

[mmcky]

First gap-fill batch of the 37 lectures the intermediate zh-cn edition is missing (full inventory in QuantEcon/project-translation#14 session notes). Seeded with claude-opus-4-8 via translate init -f on action-translation v0.20.0, as the calibration batch before committing to the remaining 32 — review quality here decides whether Opus stays the seed model and whether batch size 5 is right.

Lecture	Section	Source lines
blackwell_kihlstrom	统计与信息论	1,363
information_market_equilibrium	统计与信息论	1,574
merging_of_opinions	统计与信息论	1,309
survival_recursive_preferences	统计与信息论	1,248
chow_business_cycles	动态系统导论	1,652

What's in the diff beyond the five lectures:

• _toc.yml: five entries inserted at the positions mirroring the source TOC order.
• quant-econ.bib: synced from source — the five lectures cite 46 keys the old bib lacked (engine gap: forward/sync don't carry shared assets referenced by lectures — quant-econ.bib and _admonition/* dangle and fail strict builds action-translation#117, resync/init don't sync the shared bib). Verified the 15 entries this drops are cited nowhere in this repo.
• .translate/state/ entries + .translate/config.yml (this repo had state files but no config — init bootstraps it), so sync discovery sees these files from day one.
• Font paths post-fixed from the engine's hard-coded _fonts/ to this repo's fonts/ convention (engine gap noted in CLI forward --github labels never match the review workflow's filter, so resync PRs skip AI review action-translation#131 thread territory; the font file already exists at lectures/fonts/).

Structural checks pass: code-cell and fence counts identical to source on all five, heading maps present, no text.usetex (per the zh-editions convention), TOC parses. No environment changes needed — all five use only numpy/scipy/matplotlib.

This is a draft for native review, not a finished edition (fr/fa precedent) — the seed guidance treats machine seeds as review drafts.

🤖 Generated with Claude Code

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[mmcky]

Note on the red review check: Review Translations only handles PRs carrying the action's metadata block (### Source PR / translation-sync-metadata), which init-seeded PRs don't have — there is currently no AI-review path for seed PRs (noted on QuantEcon/action-translation#131). Removed the action-translation label so the workflow stops firing here; this batch's quality gate is the native review this draft exists for, plus the preview build.

[github-actions]

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[mmcky]

Superseded by the consolidated seed PR: per Matt's call, all 37 missing lectures land as a single PR (the remaining 32 are translating on Opus 4.8 now), which avoids stacked _toc.yml edits across two PRs. This branch's five lectures are preserved (rebased onto current main) and will be merged into the consolidated branch — nothing here is discarded, including the review context above. The red review check was the known seed-PR review gap (QuantEcon/action-translation#131), not a content failure — build and preview were green.