docs(1788): SolrJ call-site inventory vs Solr 10 (#1996)

[natechadwick-intsof]

Summary

Slice 1 of parent epic #1788 (Solr / SolrJ 9.10.1 → 10.x). Delivers a frozen docs-only inventory and cutover matrix for implementers of slices 2–4.

Document: docs/ai-generated/tasks/1788-solrj-10/00-inventory.md

Key findings

Area	Finding
Pin	Root solr.version = 9.10.1 (unchanged)
Java importers	One file: system/.../PSSolrDeliveryHandler.java (9 org.apache.solr imports)
Primary client	HttpSolrClient.Builder + setUseMultiPartPost(true) — removed in Solr 10
Cloud path	CloudSolrClient.Builder(List.of(host)) when serverCloudType=true; ZK module excluded + enforcer-banned (#1673)
Extract	ContentStreamUpdateRequest("/update/extract") — Solr 10 requires Tika Server ops-side
POM edges	Root depMgmt + exclusions/Jetty strip; system optional; WebUI direct dep with zero imports
Tests	SolrConfigLoaderTest config-only — no client tests

Cutover matrix (summary)

• issue 1788 slice 2: SolrJ 10 compile cutover + unit tests (system/metadata primary) #1997 — Replace HttpSolrClient; Cloud URL builder; unit tests
• issue 1788 slice 3: explicit Maven modules / packaging for non-transitive SolrJ bits #1998 — Explicit solr-solrj-jetty; reconcile Jetty exclusions
• issue 1788 slice 4: delivery-tier metadata Solr verification plan (mock/unit first; live optional) #1999 — Verification plan (mock first)
• issue 1788 slice 5: docs + Dependabot #1777 disposition + solr.version bump PR closure #2000 — Real solr.version bump + Dependabot build(deps): bump org.apache.solr:solr-solrj from 9.10.1 to 10.0.0 #1777 disposition

Hard ban: Do not merge Dependabot #1777 version-only; no bare pin bump in this PR.

Test plan

• Full-tree grep for org.apache.solr imports and solr-solrj POM edges
• Mapped call sites to Solr 10 major changes
• Docs-only: no production Java / no solr.version change
• Spotless: mvnw.cmd -DspotlessFiles=docs/ai-generated/tasks/1788-solrj-10/00-inventory.md spotless:apply then spotless:check (BUILD SUCCESS); out-of-scope Spotless rewrites discarded (not in this PR)
• Maven clean install: N/A (docs-only; no module sources/tests/POMs changed)

Gates evidence

Gate	Result
Erlang self-review	Docs inventory only; absolute paths documented as repo-relative; no secrets; no non-portable path code
Spotless apply → check	Pass (scoped file); monorepo reformat noise not committed
Module clean install	Skipped — docs only
Change-class companions	Inventory doc + matrix linking sibling issues #1997–#2000

Operator

Operator: Grok: night-issue-prs (model grok-4.5)

Fixes #1996

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (1 file)

• docs/ai-generated/tasks/1788-solrj-10/00-inventory.md - docs-only inventory; all factual claims verified against source

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