Add Entry Type taxonomy to entries and reports

[normanajn]

Adds a new Entry Type classification for submissions, addressing #16.

Entry Type is modeled as an extensible taxonomy table (like Project/Category) so admins can add/sort/deactivate types without code changes. It is optional on entries (like Group), so existing entries need no backfill. Category is kept as-is.

Changes

• taxonomy: new EntryType(TaxonomyBase) + migration; Django admin registration; management views/URLs/templates; "Entry Types" tab on every taxonomy page; JSON export/import; seed_taxonomy seeds Weekly Report / Milestone / Activity.
• entries: nullable entry_type FK (+ index); dropdown on the new/edit entry form; shown on the detail page; added to the entries admin list/filter.
• reports: Entry Type filter on the Reports page (filter-only, matching the existing Lab Priority pattern — no new sortable column).
• audit: tracks entry_type_id changes.
• docs: API page lists the new /taxonomy/entry-types/ routes.
• tests: form save + optional behavior, management page access + create, seed count, reports filter. Full suite: 204 passing.

Out of scope (follow-up if wanted)

• Report exporters (CSV/Excel/PDF/AI) and the JSON entry API do not yet include entry_type.

Closes #16

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR introduces an optional Entry Type taxonomy to classify entries and enable filtering in reports, implemented in the same “extensible taxonomy” style as Projects/Categories so it can be managed by admins without code changes.

Changes:

• Adds EntryType taxonomy model (with migration), admin registration, management views/URLs, templates, and export/import + seed_taxonomy defaults.
• Adds nullable WorkItem.entry_type FK (with index), exposes it on entry create/edit + detail views, and adds it to the entries admin list/filter.
• Adds an Entry Type filter to the Reports page and includes tests covering management access/creation, entry form behavior, seeding, and reports filtering.

Reviewed changes

Copilot reviewed 26 out of 26 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tests/test_taxonomy.py	Adds coverage for Entry Type management access/creation and seed expectations.
tests/test_reports.py	Adds report preview filtering test for entry_type.
tests/test_entries.py	Adds form submission tests ensuring entry_type is saved and optional.
apps/taxonomy/views.py	Adds Entry Type manage/edit views and includes entry types in taxonomy export/import.
apps/taxonomy/urls.py	Adds routes for Entry Type manage/edit pages.
apps/taxonomy/templates/taxonomy/projects.html	Adds “Entry Types” tab link in taxonomy navigation.
apps/taxonomy/templates/taxonomy/lab_priorities.html	Adds “Entry Types” tab link in taxonomy navigation.
apps/taxonomy/templates/taxonomy/groups.html	Adds “Entry Types” tab link in taxonomy navigation.
apps/taxonomy/templates/taxonomy/categories.html	Adds “Entry Types” tab link in taxonomy navigation.
apps/taxonomy/templates/taxonomy/entry_types.html	New Entry Types management page (list/add + JSON restore toggle).
apps/taxonomy/templates/taxonomy/entry_type_form.html	New Entry Type edit form page.
apps/taxonomy/models.py	Introduces EntryType(TaxonomyBase).
apps/taxonomy/migrations/0004_entrytype.py	Creates EntryType table.
apps/taxonomy/management/commands/seed_taxonomy.py	Seeds default Entry Types (Weekly Report/Milestone/Activity).
apps/taxonomy/forms.py	Adds EntryTypeForm.
apps/taxonomy/admin.py	Registers EntryType in Django admin.
apps/reports/templates/reports/index.html	Adds Entry Type dropdown filter to the Reports page.
apps/reports/filters.py	Adds entry_type ModelChoiceFilter to WorkItemFilter.
apps/entries/templates/entries/form.html	Adds Entry Type dropdown to entry create/edit form.
apps/entries/templates/entries/detail.html	Displays Entry Type on entry detail page when present.
apps/entries/models.py	Adds nullable entry_type FK on WorkItem plus index.
apps/entries/migrations/0008_workitem_entry_type_and_more.py	Migration adding entry_type field and DB index.
apps/entries/forms.py	Adds entry_type to WorkItemForm fields and queryset.
apps/entries/admin.py	Adds entry_type to admin list display and filters.
apps/core/templates/core/api.html	Documents the new /taxonomy/entry-types/ routes.
apps/audit/signals.py	Tracks entry_type_id changes in audit logging.

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