Session Log: Sprint 01 1a.6 — Scheme nodes → taxonomy terms migration

Date: 2026-06-22 Participants: Than Grove, Claude Opus 4.7 Outcome: - Implementation: Sprint 1 task 1a.6 ✅ — first migration shipped. New mandala_migrations module hosts a mandala_images migration group and the d7_images_external_classification_scheme migration (D7 external_classification_scheme nodes → D11 taxonomy terms in the 1a.3 vocabulary). Migrate API plumbing (composer adds drupal/migrate_plus ^6.0 + drupal/migrate_tools ^6.1; core migrate + migrate_drupal enabled). Source DB plumbed as secondary DDEV database d7_images (loaded from data/mandala-prod-images-db_2026-06-11.sql.gz, 70 MB); migrate connection key wired in settings.php inside the DDEV-conditional include block, portable across teammates. - Result: 2 source rows → 2 D11 terms (LCSH + TGN — the only schemes in the production dump; smaller than expected). All 5 custom fields + name + description (format preserved) populated. Entity-reference from the external_classification paragraph's field_external_class_scheme finds both terms, so 1a.7 image migrations can reference them. - This session also shipped 1a.5 (PR #9) — see the separate session log 2026-06-22-sprint-01-1a5-iiif-wiring.md. The transcript here includes the earlier 1a.5 portion of the conversation for completeness. - New deferred note: migrate_drupal noise on drush ms (Low — workaround is drush ms --group=mandala_images).

This is the raw conversation transcript. Tool calls and code output are omitted; only the text exchanges are recorded.

User — 2026-06-22 18:22

get ready for another session with mandala-navina

Claude — 2026-06-22 18:22

I'll run the session startup ritual now — reading the three orientation docs plus the memory files.

Claude — 2026-06-22 18:22

Memory flags the project state as 3 days old — and since then, PR #8 (sprint-01/kmaps-search-root, the 1a.4 branch) was merged to main. Let me peek at the most recent session log for any handoff notes.

Claude — 2026-06-22 18:22

Oriented. Quick state since the 2026-06-18 wrap-up:

Main branch is clean. PR #8 (1a.4 — KMaps search_root_kmapid + KmapsPathResolver + D7→D11 mapping doc) is now merged. PR #7 (dev notes) also in.
ADRs 001–011 all Accepted. ADR 011 (Group collections — Option D) closed Spike 3 (◐ → ●).
Spike status: 1, 2, 3 Proven · 8 Partial · 4, 5, 6, 7 Pending. Than owns 4, 6 (and previously 3).
Sprint 1 / Step 1a: 1a.1–1a.4 done on main. Open: 1a.5–1a.9. Step 1b (incl. 1b.2 Group inheritance per ADR 011) unstarted.
High-priority deferred: solr-sync architecture + solr pipeline cost (both blocked on Dave Goldstein convo), reindeer-x-aws-credential-strategy, images-prod-packaging-monorepo-pass, images-agent-name-paragraph-title-mapping.

I'll update the project memory to reflect the PR #8 merge, then I'm ready.

Claude — 2026-06-22 18:22

Memory updated. (Skipping TaskCreate — no concrete work has been chosen yet.)

What would you like to drive this session? A few natural candidates from the open queue:

1a.5 — IIIF wiring on D11 (verify endpoints, port shanti_image_formatter / shanti_images_*_url)
1a.6 — scheme nodes → taxonomy terms migration
1a.7 — the pattern-setting image migration (node→paragraph satellites; ~111k images)
1a.8 — Solr write/sync via reindeer_x (blocked-ish on Spike 8 + Dave Goldstein convo)
Spike 4 (yours) — CKEditor 5 footnotes + Tibetan Unicode
Spike 6 (yours) — API compatibility for the React app (Phase 3 cutover gate, but cheap probes can start now)
Something else entirely?

User — 2026-06-22 18:37

let's start on 1a.5

Claude — 2026-06-22 18:37

Starting on 1a.5. Let me orient — I need to see (a) what the D11 shanti_image content type currently looks like, (b) what shanti_image_formatter / shanti_images_*_url is in D7, and (c) any IIIF-related notes in the planning docs.

Claude — 2026-06-22 18:38

Let me read the sprint task definition and audit, then locate the D7 source modules.

Claude — 2026-06-22 18:38

The find returned nothing — let me hunt those legacy module dirs more carefully and start tracking work.

Claude — 2026-06-22 18:38

Found the D7 source. Let me read the module entry points and the audit doc's sidecar section so I know exactly what needs porting.

Claude — 2026-06-22 18:38

Let me read the ShantiImage class (the URL builder), the admin form (the config vars), and check whether shanti_image_formatter is a separate thing — plus look at the current D11 shanti_image field setup.

Claude — 2026-06-22 18:39

Let me see the URL-builder class and check the D11 field/display setup for field_image.

Claude — 2026-06-22 18:39

I've got the picture. Quick orientation on the work:

What 1a.5 actually is, after reading the D7 source + the audit doc:

The "formatter" + "URL paths" language in the sprint doc refers loosely to a stack — there is no standalone shanti_image_formatter plugin in D7. The display path is ShantiImage class (URL builder) + shanti_images_preprocess_node() + theme JS, all keyed off an i3fid value (shanti-image-NNN) that lives in the custom sidecar table shanti_images, not on the image file.
The 4 IIIF-config variables (shanti_images_upload_url, shanti_images_delete_url, shanti_images_view_url, shanti_images_view_path) drive everything; static ShantiImage::buildIIIFURL() is the pure builder per IIIF Image API 2.x.
Current D11 state: field_image exists on shanti_image, using the stock image formatter — no IIIF wiring, no i3fid storage, no admin form anywhere.

Proposed shape of the port (single sprint session, achievable):

Step	Work
0	Reachability probe — curl prod IIIF (e.g. `https://iiif.lib.virginia.edu/mandala/shanti-image-1/info.json`) from DDEV. Cheapest possible gate; answers "endpoints reachable from D11".
1	New module `shanti_iiif` (matching `shanti_kmaps_*` naming family). Settings form → `shanti_iiif.settings` config, DSF-convention overridable per env (matches the 1a.4 pattern).
2	`IiifUrlBuilder` service — port of static `buildIIIFURL` only. Pure, no DB.
3	Storage decision for `i3fid` / `mmsid` / dims. See ⬇
4	`iiif_image` field formatter plugin — drop-in replacement for stock `image` formatter on `field_image`.
5	Switch view display + manual smoke test against a known `shanti-image-NNN`.

Upload/delete path is out of scope — new uploads only matter post-migration; 1a.7 carries existing i3fid values forward verbatim (per ADR 004 + audit).

The one design call that actually shapes the port — the i3fid storage shape — needs your read:

Claude — 2026-06-22 18:52

Both recommendations accepted. Running the reachability probe now — external first, then inside DDEV.

Claude — 2026-06-22 18:52

Server is up (responding fast, 404 is a real response not a connect failure) — but those IDs/prefix don't resolve. Let me see the 404 body and try alternative paths/IDs.

User — 2026-06-22 18:54

[Request interrupted by user for tool use]

User — 2026-06-22 18:54

Try to contact the iiif server again. I wasn't on VPN.

Claude — 2026-06-22 18:54

Got it — retrying now that you're on VPN.

Claude — 2026-06-22 18:54

Same 404s — server is responding fast, so it's reachable, but the path/IDs don't resolve. Let me look at what the 404 actually says and try alternative prefixes.

Claude — 2026-06-22 18:55

Big finding from the 404 body: the IIIF server is Cantaloupe 5.0.6 with an S3 source, reachable at https://iiif.lib.virginia.edu/mandala/{i3fid}/info.json exactly as the D7 builder produces. The 404s are just "those siids don't exist in the S3 bucket" — I picked round numbers. The URL contract is confirmed.

(Aside: the 404 page leaks the S3 bucket name + full Java stack trace — mandala-assets/mandala-assets//1/shanti-image-1.jp2. Information disclosure, not a vuln, but worth a deferred note later.)

Let me find a real siid and test it both externally and from inside DDEV.

Claude — 2026-06-22 18:55

Real siids are 6-digit (680xxx range, not the small numbers I guessed). Now the definitive probe — external + inside DDEV against a real id.

Claude — 2026-06-22 18:56

External works — HTTP 200, 3072×2304, full IIIF level-2 manifest, derivative in ~1s. Notable: the server self-reports its canonical @id as /iiif/2/ not /mandala/ — both prefixes work, D7 just happens to use the latter. Worth a note. Now from inside DDEV:

Claude — 2026-06-22 18:57

Reachability gate: PASS. DDEV web container reaches the IIIF server cleanly — 870-byte info.json (HTTP 200), 24KB JPEG derivative in ~150ms warm.

Findings from the probe (briefly worth noting):

	Finding
Server	Cantaloupe 5.0.6 (Jetty), S3-backed (`mandala-assets` bucket)
URL contract	`https://iiif.lib.virginia.edu/mandala/{i3fid}/{region}/{size}/{rotation}/{quality}.{fmt}` — IIIF Image API 2.x level 2
Surprise	Server's canonical self-`@id` is `/iiif/2/{i3fid}`, not `/mandala/`. Both prefixes resolve to the same images. D7 used `/mandala/` historically.
Latency	~1.3s cold info.json (TLS handshake), ~150ms warm derivative — fine
Real siid range	~6-digit (e.g. `shanti-image-680687`); my `shanti-image-1` guesses were just non-existent IDs
Side note	404 page leaks S3 bucket + full Java stack trace → defer for a security note (not a blocker)

Two small decisions before I scaffold the module:

Claude — 2026-06-22 18:58

What would you like to clarify on either question? I asked two things:

URL prefix — keep D7's /mandala/ or switch to the canonical /iiif/2/ the server self-reports.
Module name — shanti_iiif (matches shanti_kmaps_* family) or preserve D7's shanti_images.

Anything I left ambiguous, or context you want to add before answering?

User — 2026-06-22 18:58

What do the two different numbers in latency (cold vs warm) mean?

Claude — 2026-06-22 18:59

Good question to push on — I was a little hand-wavy.

What I called it: - "Cold" = first request from a given client; pays DNS lookup + TCP connect + TLS handshake (~50–200ms of overhead before any bytes flow). Server side may also have to fetch the JP2 from S3 and render the JPEG for the first time. - "Warm" = subsequent request right after; DNS is cached, TLS may be reused, and Cantaloupe likely has the derivative cached on disk so it just streams the bytes.

What actually happened in my probe — not a clean A/B because the calls weren't apples-to-apples:

Where	Call	Time	Why
Host (external)	info.json (1st)	176ms	First call from host curl — paid the TLS handshake, but info.json is just metadata so no image work
Host (external)	400px derivative	1087ms	First time the server rendered this size from the JP2 → S3 fetch + downscale (image-processing cold)
DDEV web (inside)	info.json (1st)	1314ms	First call from a different client (the DDEV container), so another TLS handshake. Slow for pure metadata though — probably DDEV → host network bridge overhead, possibly proxy traversal
DDEV web (inside)	400px derivative	154ms	Cantaloupe had the 400px JPEG cached from the prior host call → just stream bytes

What it means for 1a.5: the warm number (~150ms per derivative) is what an end user actually experiences page-to-page, because Cantaloupe caches derivatives by URL params. The cold derivative cost only hits the first viewer of each unique size for each image. That's fine for the wiring decision.

Caveats I should be honest about: 4 single-shot calls is not a real benchmark. If perf becomes a concern later, we'd want a proper run (curl --resolve to nail DNS, N sequential warm calls, multiple sizes) — but for the "endpoints reachable from D11" gate that's overkill. We have what we need.

Ready to re-ask the prefix + module-name questions, or want to dig more on the probe first?

User — 2026-06-22 19:00

re-ask the prefix and module name questions

Claude — 2026-06-22 19:02

Locked in: /mandala/ prefix, module name shanti_iiif. Let me peek at the existing shanti_kmaps_admin + KmapsPathResolver first so I follow the same DSF-settings + service pattern (won't reinvent).

Claude — 2026-06-22 19:02

Patterns understood. Let me track the substeps and start building.

Claude — 2026-06-22 19:03

Scaffolding the module now. Minimal config first (just view_url + view_path — upload/delete/extensions are dead config until 1a.8 needs them).

Claude — 2026-06-22 19:04

Module installed clean. Smoke tests:

Claude — 2026-06-22 19:04

Now verify those generated URLs actually fetch from IIIF.

Claude — 2026-06-22 19:05

Foundational layer done — service, settings, and end-to-end round-trip verified. Tasks 1-4 ✅.

Claude — 2026-06-22 19:05

Current state:

drupal/web/modules/custom/shanti_iiif/
├── shanti_iiif.info.yml
├── shanti_iiif.routing.yml
├── shanti_iiif.links.menu.yml
├── shanti_iiif.services.yml
├── config/install/shanti_iiif.settings.yml
├── config/schema/shanti_iiif.schema.yml
└── src/
    ├── Form/SettingsForm.php
    └── IiifUrlBuilder.php

Smoke-tested in DDEV: config installed, route registered (/admin/config/media/shanti-iiif), service generates correct IIIF URLs, and three sample URLs (info.json, 96px, 400px) all round-trip HTTP 200 from inside the DDEV container.

Natural pause point. Remaining work splits into one cohesive next chunk (tasks 5–7: storage fields, field formatter plugin, wire into display) plus the deferred notes (task 8). Before I commit field definitions to the bundle's CMI export, two specifics worth your read:

Claude — 2026-06-22 19:07

Now adding the fields into the form display (so we can set them) and view display (so the formatter can read them).

Claude — 2026-06-22 19:08

Importing the new field configs now — let me see what drush cim reports.

Claude — 2026-06-22 19:08

Problem: drush cim uninstalled my shanti_iiif module because I hadn't exported core.extension.yml after enabling it — CMI thought the module shouldn't be installed. Re-enabling and exporting properly.

Claude — 2026-06-22 19:08

Quick verification that the re-export got everything coherent:

Claude — 2026-06-22 19:09

field_iiif_* fields are sitting in the hidden: section of the form display — but field_iiif_id is required, so users can't save. Need to give them proper widgets.

Claude — 2026-06-22 19:09

Moving IIIF fields out of hidden: and into content: on the form display so users can actually set them.

Claude — 2026-06-22 19:10

Plugin registered. Now switching field_image from the stock formatter to iiif_image, then importing.

Claude — 2026-06-22 19:11

Node created (nid=1). Now fetch the rendered page and inspect the output for the IIIF <img>.

Claude — 2026-06-22 19:11

End-to-end works. Rendered HTML:

<img class="iiif-image" loading="lazy" data-iiif-id="shanti-image-680687"
     src="https://iiif.lib.virginia.edu/mandala/shanti-image-680687/full/!800,800/0/default.jpg"
     alt="" />

…and that URL already verified HTTP 200 from inside DDEV. Full chain works: D11 node → IiifImageFormatter → IiifUrlBuilder → IIIF URL → Cantaloupe → JPEG bytes. 1a.5's display gate is closed.

Claude — 2026-06-22 19:12

All 8 tasks done. 1a.5 is functionally complete. Summary of what landed:

New module drupal/web/modules/custom/shanti_iiif/: - IiifUrlBuilder service — pure IIIF Image API 2.x URL builder - IiifImageFormatter field formatter plugin — drop-in for the image field, reads i3fid from the entity - Settings form at /admin/config/media/shanti-iiif - Config: shanti_iiif.settings with view_url + view_path (defaults: https://iiif.lib.virginia.edu + /mandala/)

Bundle additions (8 CMI files in drupal/config/sync/): - field_iiif_id (required), field_iiif_mms_id, field_iiif_width, field_iiif_height on shanti_image - field_image view display switched from stock image formatter to iiif_image - Form display gives editors widgets for the new fields

Verified end-to-end: a shanti_image node with field_iiif_id = shanti-image-680687 renders an <img> whose src (https://iiif.lib.virginia.edu/mandala/shanti-image-680687/full/!800,800/0/default.jpg) round-trips HTTP 200 from inside the DDEV container.

Deferred notes filed: Cantaloupe 404 info disclosure (Medium), /mandala/ vs /iiif/2/ prefix alignment (Low).

Worth knowing for next session: - Smoke-test node (nid=1) and dummy file (fid=1) are still in the DB — delete or leave. - Upload/delete path is not wired (out of scope per audit doc; would come with 1a.7 migration or post-MVP user-upload). - No OpenSeadragon viewer yet — the formatter outputs a plain <img>. Deep-zoom UI is a downstream theme/JS task.

Per CLAUDE.md session-end ritual, the natural next steps are: write a session log via scripts/save-session-log.py, then commit on a branch. Want me to drive that, or pause here?

User — 2026-06-22 19:13

Can you show us an image in DDev?

Claude — 2026-06-22 19:14

Let me confirm the node renders via the live HTTP stack (not just drush eval) and surface the URL you can open.

Claude — 2026-06-22 19:14

Live HTTP works — the IIIF <img> tag is in the actual rendered HTML, not just drush-internal render. Opening it in your browser now.

Claude — 2026-06-22 19:14

Browser tab should have opened. The page lives at:

https://mandala.ddev.site/node/1

What you should see in the rendered page:

Title: "IIIF smoke test (shanti-image-680687)"
Image: A photograph (3072×2304 source, displayed at 800px scaled) of whatever shanti-image-680687 happens to be — the image is being served live from https://iiif.lib.virginia.edu/mandala/shanti-image-680687/full/!800,800/0/default.jpg
Rotation: 0°
Other Drupal node chrome (title, body slot, etc.)

If the image doesn't load in your browser but loaded for curl, the likely cause is your browser is not on VPN — only the DDEV container (which sits behind your host's network stack) reached the IIIF server during the curl test. The browser fetch goes directly from your host to iiif.lib.virginia.edu, so it also needs the VPN route.

Let me know what you see — or if you'd like me to switch to a different siid, change the size/rotation, etc.

User — 2026-06-22 19:15

What was the original url for that image?

Claude — 2026-06-22 19:15

Let me find it on the live D7 site.

Claude — 2026-06-22 19:16

Found it — here's the exact comparison.

D7 original page for that image: - Page: https://images.shanti.virginia.edu/image/shemba-lhatsos-book-project - Title: "Shemba Lhatso's book project" - D7 nid: 1631722 - Aspect ratio: 1.33 (4:3 — matches the 3072×2304 source we saw in info.json)

Same URL, both sides:

	URL produced
D7 site (info.json)	`https://iiif.lib.virginia.edu/mandala/shanti-image-680687/info.json`
D11 IiifUrlBuilder (info.json)	`https://iiif.lib.virginia.edu/mandala/shanti-image-680687/info.json`
D7 site (display, 800px scaled)	`https://iiif.lib.virginia.edu/mandala/shanti-image-680687/full/!800,800/0/default.jpg`
D11 IiifImageFormatter (display, 800px scaled)	`https://iiif.lib.virginia.edu/mandala/shanti-image-680687/full/!800,800/0/default.jpg`

Byte-identical — which is the actual proof that the port is correct. The image you (should) see on https://mandala.ddev.site/node/1 is fetching from the exact same IIIF derivative URL the live D7 page fetches.

One small note worth filing if you noticed: D7 also uses a ^!1500,1500 form for large sizes (the ^ is Cantaloupe's "upscale-if-needed" extension to the IIIF 2.x spec). My formatter only emits ! — fine for everything ≤ source resolution, but if you ever request a size larger than the source, Cantaloupe will return 4xx without the ^. Easy to add later; not needed for 1a.5's gate.

User — 2026-06-22 19:18

The D7 Url,https://images.shanti.virginia.edu/image/shemba-lhatsos-book-project, is not the same image. It is shanti-image-570261.

Claude — 2026-06-22 19:18

Good catch — let me check the actual node page to see what's really there.

Claude — 2026-06-22 19:18

You're right — I conflated two parallel arrays in the homepage's JS settings. The grid view's imgdata and genurls are not aligned the way I assumed, so my "Shemba Lhatso = 680687" mapping was wrong. The actual mapping:

Image	Node	Page
`shanti-image-570261`	Shemba Lhatso's book project	https://images.shanti.virginia.edu/image/shemba-lhatsos-book-project
`shanti-image-680687`	(some other node, not on that page)	—

Both siids are real and live on the IIIF server — that part of the probe holds. But my claim that the D7 page was rendering 680687 was wrong. Apologies for the confusion.

What the byte-identical URL proof actually establishes (still valid): - For any siid, D7 and D11 produce structurally identical IIIF URLs — https://iiif.lib.virginia.edu/mandala/{i3fid}/full/!W,H/0/default.jpg. The prefix, separator, and parameter order all match. That's true whether the siid is 570261, 680687, or anything else.

What was wrong was treating the homepage imgdata title field as 1:1 aligned with the genurls array. They're parallel but not synced the way I read them.

Want me to swap the smoke-test node to use shanti-image-570261 so the D11 page and the D7 page visibly show the same image side-by-side?

User — 2026-06-22 19:20

I want the correct Mandala url for the image you used: shanti-image-680687

Claude — 2026-06-22 19:21

Got it via the D7 siid-lookup endpoint:

https://images.mandala.library.virginia.edu/image/shemba-lhatsos-book-project-18

So shanti-image-680687 is the 18th image in the same "Shemba Lhatso's book project" series — the -18 is Drupal's collision-suffixed path alias when multiple images share the project name as their slug source. That's why shanti-image-570261 got the unsuffixed /image/shemba-lhatsos-book-project (likely the earliest-uploaded one in the series, claiming the bare slug).

So both URLs are related — same content collection, different image — not a coincidence that my botched scrape pulled the same title for both.

Open that link to see the actual D7 page for the image we're displaying in DDEV at https://mandala.ddev.site/node/1.

(Side note: the host name also flipped from images.shanti.virginia.edu to images.mandala.library.virginia.edu on the redirect. Both serve the same site — the .library.virginia.edu form is the canonical one, the .shanti.virginia.edu one is the legacy alias still in DNS.)

User — 2026-06-22 19:22

where are we?

Claude — 2026-06-22 19:22

Sprint 1 / Step 1a.5 — done. All 8 tracked tasks complete.

What landed this session: - New module drupal/web/modules/custom/shanti_iiif/ — settings form, IiifUrlBuilder service, IiifImageFormatter field formatter - 4 new fields on shanti_image: field_iiif_id (required), field_iiif_mms_id, field_iiif_width, field_iiif_height - field_image view display swapped from stock image formatter → iiif_image - Smoke-test node nid=1 (shanti-image-680687) renders the correct IIIF URL, byte-identical to what D7 produces - 2 deferred notes filed: Cantaloupe 404 info disclosure (Medium), /mandala/ vs /iiif/2/ prefix alignment (Low)

Where the repo sits: - All work uncommitted on main (working tree dirty — 8 new field configs, 2 display configs updated, 1 new module dir, 2 new deferred-note files, 2 updated index files, +1 test node + 1 placeholder file in the local DB) - core.extension now includes shanti_iiif - 1a.5 ✅ in the sprint task table; remaining open in Step 1a: 1a.6 (scheme nodes → taxonomy terms), 1a.7 (image migration), 1a.8 (Solr write/sync), 1a.9 (rollback test)

Per the CLAUDE.md session-end ritual, the natural next steps are: 1. scripts/save-session-log.py for the session log 2. Branch + commit + PR (mirrors 1a.4's sprint-01/kmaps-search-root pattern → sprint-01/iiif-wiring) 3. Update sprint doc to mark 1a.5 ✅

Want me to drive any/all of those, or are you wrapping?

User — 2026-06-22 19:23

what is next in 1a?

Claude — 2026-06-22 19:23

Remaining open in Step 1a (in dependency order):

#	Task	What it covers	Notes
1a.6	Scheme nodes → taxonomy terms migration	Port D7 `external_classification_scheme` nodes to a D11 taxonomy vocabulary. Pure CMI + migrate plugin work; no external services.	Smallest of the remaining. Good warm-up.
1a.7	The pattern-setting image migration	~111k images. Node-source via image-ref (skips orphans). Node→paragraph transform for descriptions/agents (the satellites that became Paragraphs in 1a.1). Carries `i3fid` / `mmsid` / dims forward verbatim into the fields we just added in 1a.5.	The big one. Sets the template every other site's migration will copy. Spec input: `docs/planning/kmaps-migration-mapping.md` + `docs/planning/images-content-model-audit.md`.
1a.8	Solr write/sync via reindeer_x	Wire D11 content writes back to `kmassets` Solr — the write direction (1a.4 only did read).	Depends on Spike 8 + Dave Goldstein conversation. Soft-blocked.
1a.9	Repeatable test → validate → rollback	Reproducible procedure against a staging prod-DB copy.	Last; depends on 1a.6/1a.7 being mergeable.

Logical next move: 1a.6 (scheme nodes → taxonomy) is the cheapest unblocked task and a natural lead-in to 1a.7 since the term mapping needs to exist before image nodes can reference it. 1a.7 is the highest-value but biggest piece — worth a session of its own. 1a.8 is the highest-risk and needs a human conversation first.

Recommendation: 1a.6 next session as a contained warm-up, then plan 1a.7 as a multi-session push. Or skip straight to 1a.7 if you want to take on the big one while context is fresh.

User — 2026-06-22 19:24

let's do 1a.6 next

Claude — 2026-06-22 19:24

Quick check before I dig in — 1a.5's work isn't committed yet, and the CLAUDE.md session-end ritual calls for a session log + branch/PR. Two reasonable paths:

Claude — 2026-06-22 19:26

Note: there's also unrelated drift in 4 search_api_solr.solr_field_type.text_* files. Quick check to confirm it's not 1a.5-related before I exclude them from the commit.

Claude — 2026-06-22 19:27

Confirmed — pure key-ordering drift in search_api_solr configs, unrelated. Excluding from this commit. Creating branch + commit + PR now.

Claude — 2026-06-22 19:27

Commit landed locally on sprint-01/iiif-wiring (SHA 9675bd4), but the push failed — your SSH key isn't loaded for github.com in this session, even though gh auth is happy.

Run this yourself to load the key and push (use the ! prefix so the output lands in this conversation):

! ssh-add ~/.ssh/id_ed25519 && git push -u origin sprint-01/iiif-wiring

…substituting whatever key file you normally use. Once it's pushed I can open the PR with gh pr create.

Or, if you'd rather, I can switch the remote to HTTPS (which would use your gh token) — but that's a change to your repo's .git/config so I'll wait for your say-so.

User — 2026-06-22 19:28

I pushed it manually.

Claude — 2026-06-22 19:29

PR open: https://github.com/uvalib/mandala-navina/pull/9

(The "4 uncommitted changes" warning is the unrelated search_api_solr.solr_field_type.text_* drift I left out — not in the PR.)

1a.5 closeout fully wrapped: - Sprint doc updated (1a.5 ✅ progress row) - Session log saved - Branch pushed, PR #9 open - 2 deferred notes filed and indexed

Ready to start 1a.6 — scheme nodes → taxonomy terms. Want me to dive in now, or wrap this session here?

User — 2026-06-22 19:33

I have already pushed the branch and merged the pull request on github but now there are changes on the branch locally. Are these changes significant?

Claude — 2026-06-22 19:33

No — those 4 files are not significant. They're the same key-ordering drift I deliberately excluded from PR #9.

I verified earlier with git diff — the changes are pure cosmetic re-orderings inside search_api_solr.solr_field_type.text_*.yml: - language: English and protected: protwords_en.txt swap positions - ignoreCase: true gets inserted at a different position in the filter list - No values change, no fields added/removed

YAML maps are unordered; Solr config doesn't care about key order. The actual Drupal active config is byte-identical regardless of which ordering ends up in the file. If you drush cim them you get a no-op.

Where it comes from: almost certainly a search_api_solr module version bump at some point — the installed module now re-serializes those configs in a different key order than what's in the repo, so every drush cex re-emits them as "changed."

Safe to discard. They'll re-appear next time anyone runs drush cex, but that's a separate "config baseline normalization" cleanup, not your problem on this branch.

Recommended cleanup:

git restore drupal/config/sync/search_api_solr.solr_field_type.text_*.yml
git checkout main
git pull
git branch -d sprint-01/iiif-wiring

Want me to run those, or do you want to drive?

User — 2026-06-22 19:34

No, I ran them because of the passcode.

Claude — 2026-06-22 19:34

Understood. Quick state check to confirm we're on a clean main with PR #9 merged.

Claude — 2026-06-22 19:35

Clean — on main, PR #9 merged, working tree clean. Ready for 1a.6 whenever you say go.

Want me to dive in now, or pause here?

User — 2026-06-22 19:35

let's start 1a.6

Claude — 2026-06-22 19:35

Starting 1a.6. Let me orient on what's actually involved — D7 source shape, D11 destination, and whether there's any existing migrate plumbing.

Claude — 2026-06-22 19:35

Important finding: no Migrate API plumbing exists yet — so 1a.6 is also the "set up the migration infrastructure" task. Let me check the D7 source shape and dump availability before sketching the plan.

Claude — 2026-06-22 19:36

Orientation in hand. Quick reality check before diving in: 1a.6 is bigger than I initially flagged it as "the cheapest warm-up," because no Migrate API infrastructure exists yet in this repo. That setup work is real, but it's also the foundation 1a.7 will reuse.

D7 source (external_classification_scheme content type — nodes):

D7 node field	Required	D11 term field
`title`	yes	`name` (built-in)
`body`	no	`description` (built-in)
`field_scheme_abbreviation`	yes	`field_scheme_abbreviation`
`field_scheme_home_url`	no	`field_scheme_home_url`
`field_scheme_item_url`	no	`field_scheme_item_url`
`field_scheme_record_path`	no	`field_scheme_record_path`
`field_scheme_record_type`	no	`field_scheme_record_type` (list_default)

D11 destination already exists from 1a.3 — clean 1:1 mapping, no field shape changes.

D7 dump available locally: data/mandala-prod-images-db_2026-06-11.sql.gz (the same 111,340-image production dump).

What 1a.6 actually involves (in priority order):

Migrate API infrastructure — composer-add migrate_plus + migrate_tools, enable core migrate + migrate_drupal, define a migration group (mandala_images).
D7 source DB — load the dump into a secondary DDEV MariaDB and wire it as a second connection in settings.ddev.php.
Migration definition — one migrate_plus.migration.*.yml file mapping D7 scheme nodes → D11 taxonomy terms. Tiny — d7_node source plugin + 5 field maps.
Custom migration module — mandala_migrations/ to host this migration's YAML (and future 1a.7 migrations) under config/install/.
Run + verify — drush migrate:import images_external_classification_scheme, check the new terms in the vocabulary, smoke-test that the paragraph's field_external_class_scheme (entity reference to this vocabulary, set up in 1a.3) can pick them up.

Total scope: Probably one session, but only if there are no surprises with the source DB connection or migrate_drupal's D7 support for the custom node bundle.

Before I commit to a path, one design call worth your read — the rest are recommendations I'd just default to:

Claude — 2026-06-22 19:39

settings.ddev.php is auto-generated by DDEV (don't edit). I'll add the migrate connection to settings.php inside the DDEV-conditional block — same MariaDB host as the default DB, just a different DB name (d7_images). Portable across teammates.

Claude — 2026-06-22 19:40

DDEV uses --database= not --target-db=. Fixing the comment and loading the dump.

User — 2026-06-22 19:48

Continue from where you left off.

Claude — 2026-06-22 19:48

No response requested.

User — 2026-06-22 19:48

where are we now?

Claude — 2026-06-22 19:48

Where we are: mid-1a.6, blocked on a typo I made.

Progress so far:

#	Task	Status
12	Add migrate_plus/tools, enable migrate modules	✅ — installed & enabled (migrate, migrate_drupal, migrate_plus, migrate_tools, phpass)
13	Configure `migrate` connection in settings.php	✅ — added inside the DDEV-conditional block, points at `d7_images` DB
14	Load D7 dump into secondary DB	❌ failed — I gave `ddev import-db` the wrong path (`mandala-navina/data/...` doesn't exist; the dump lives at `/Users/ndg8f/Sandbox/Mandala/data/mandala-prod-images-db_2026-06-11.sql.gz`, one level up)
15	Scaffold `mandala_migrations` module	pending
16	Write the scheme migration YAML	pending
17	Run + verify	pending

Immediate next step: retry the import with the correct path. Doing it now.

Claude — 2026-06-22 19:50

Dump loaded — and only 2 scheme nodes exist in production (smaller than expected). Let me see what they are and confirm Drupal can reach the source DB.

Claude — 2026-06-22 19:50

migrate connection works from Drupal (matches 2). Just a column name guess wrong — let me check the URL field's actual schema and see all the field values.

Claude — 2026-06-22 19:50

Have all the data. Quick check that the D11 link field shape matches what we need for field_scheme_home_url, then scaffold the module.

Claude — 2026-06-22 19:52

Migration registered: 2 source rows, status idle. Running the import now.

Claude — 2026-06-22 19:52

Migration imported clean. Quick verification of the fuller field set and the entity-reference target:

Claude — 2026-06-22 19:53

1a.6 complete. Both LCSH + TGN migrated with all fields intact, including descriptions (HTML entities preserved, format value carried through). The paragraph's field_external_class_scheme entity-reference target picks up both terms — so when 1a.7 migrates image nodes with their classification paragraphs, they'll reference these terms correctly.

Claude — 2026-06-22 19:53

Summary of what landed:

Composer adds: drupal/migrate_plus ^6.0, drupal/migrate_tools ^6.1
Modules enabled: migrate, migrate_drupal, migrate_plus, migrate_tools, plus our own mandala_migrations
settings.php: added migrate connection key inside the DDEV-conditional block (points at secondary d7_images DB on the same MariaDB instance)
D7 dump loaded: data/mandala-prod-images-db_2026-06-11.sql.gz → d7_images DB
New module drupal/web/modules/custom/mandala_migrations/:
migrate_plus.migration_group.mandala_images.yml — group for all Images-track migrations
migrate_plus.migration.d7_images_external_classification_scheme.yml — the scheme migration

Run result: 2 created, 0 updated, 0 failed, 0 ignored. D11 terms tid=1 (LCSH) + tid=2 (TGN).

One thing worth noting for next session: drush ms (no filter) is now noisy — migrate_drupal auto-registers ~50 default D6/D7 migrations that all fail because our d7_images DB is a site-specific dump (Images only), not a full D7 Drupal install (no filter_formats, boxes, etc. tables). Going forward we should run migrations scoped to our group: drush ms --group=mandala_images. Probably worth a tiny deferred note before the session wraps.

State of the repo: working tree is dirty — composer.json/lock changes, settings.php edit, new module dir. Sprint doc still needs the 1a.6 ✅ row, and we haven't committed yet.

What would you like next? 1. Smoke-test by creating a shanti_image node and assigning one of the new terms via the classification paragraph (proves end-to-end)? 2. Wrap 1a.6 (sprint doc + session log + branch/PR), same ritual as 1a.5? 3. Push straight into 1a.7 (the big one)?

User — 2026-06-22 19:54

wrap 1a.6 like we did 1a.5