Agent profiles (AGENTS.md): per-org library, free builtins, versioning, marketplace, persona

Reusable agent definitions authored as AGENTS.md (YAML frontmatter + a Markdown body that becomes
the agent's operating guide). Mirrors the skill library, including its review hardening.

- AgentProfile entity (OrgBoard): org-scoped + versioned by (OrganizationId, ProfileKey, Version),
  NULLS NOT DISTINCT unique index; Origin Builtin|Authored|Installed; ProfileVisibility +
  ProfileStatus with the Public⟹Published invariant enforced in Apply()/SetVisibility(). AGENTS.md
  parser (YamlDotNet). AgentProfileWriter is the single upsert path (insert-only mode for install).
- Free builtins: AgentProfileSeeder seeds Aria (PO), Quill (QA), Edison (backend) on startup via a
  new IStartupSeeder + SeederRunner (runs after migrations). Idempotent, null-org, visible to all.
- Endpoints (/api/orgboard/agent-profiles): upload, list (resolvable-winner order), get versions,
  publish/unpublish, fork, marketplace (per-(key,version) AlreadyInLibrary), install (insert-only →
  clean 409, no clobber). ConfigureAgents to author/manage; ViewBoard to browse; audited.
- Persona: Agent gains Persona; ConfigureAgent stores it; AgentRunContext carries it; PromptAssembler
  injects it as "# Operating guide" (data, not instructions) so an applied profile shapes the run.
- Client: Agent profiles page (library + marketplace tabs, upload editor, publish/unlist/fork/install),
  routed + in the nav.

Verified: ArchitectureTests 8/8, IntegrationTests 55/55 (new AgentProfilesTests: builtins seeded,
upload + validation, publish, cross-org marketplace list→install→private copy, duplicate 409, per-
version flag, Member 403; persona renders as the operating guide), client build green.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/Modules/TeamUp.Modules.OrgBoard/Persistence/Migrations/OrgBoardDbContextModelSnapshot.cs

@@ -61,6 +61,9 @@ namespace TeamUp.Modules.OrgBoard.Persistence.Migrations
                         .HasMaxLength(120)
                         .HasColumnType("character varying(120)");
 
+                    b.Property<string>("Persona")
+                        .HasColumnType("text");
+
                     b.Property<Guid>("SeatId")
                         .HasColumnType("uuid");
 
@@ -79,6 +82,94 @@ namespace TeamUp.Modules.OrgBoard.Persistence.Migrations
                     b.ToTable("agents", "orgboard");
                 });
 
+            modelBuilder.Entity("TeamUp.Modules.OrgBoard.Domain.AgentProfile", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<Guid?>("AuthoredByMemberId")
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Body")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("ContentHash")
+                        .IsRequired()
+                        .HasMaxLength(64)
+                        .HasColumnType("character varying(64)");
+
+                    b.Property<DateTimeOffset>("CreatedAtUtc")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Monogram")
+                        .HasMaxLength(8)
+                        .HasColumnType("character varying(8)");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasMaxLength(200)
+                        .HasColumnType("character varying(200)");
+
+                    b.Property<Guid?>("OrganizationId")
+                        .HasColumnType("uuid");
+
+                    b.Property<int>("Origin")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("ProfileKey")
+                        .IsRequired()
+                        .HasMaxLength(128)
+                        .HasColumnType("character varying(128)");
+
+                    b.Property<string>("RecommendedAutonomy")
+                        .IsRequired()
+                        .HasMaxLength(20)
+                        .HasColumnType("character varying(20)");
+
+                    b.PrimitiveCollection<List<string>>("Roles")
+                        .IsRequired()
+                        .HasColumnType("text[]");
+
+                    b.PrimitiveCollection<List<string>>("SkillKeys")
+                        .IsRequired()
+                        .HasColumnType("text[]");
+
+                    b.Property<string>("Status")
+                        .IsRequired()
+                        .HasMaxLength(20)
+                        .HasColumnType("character varying(20)");
+
+                    b.Property<string>("Summary")
+                        .HasMaxLength(1000)
+                        .HasColumnType("character varying(1000)");
+
+                    b.Property<DateTimeOffset>("UpdatedAtUtc")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Version")
+                        .IsRequired()
+                        .HasMaxLength(32)
+                        .HasColumnType("character varying(32)");
+
+                    b.Property<string>("Visibility")
+                        .IsRequired()
+                        .HasMaxLength(20)
+                        .HasColumnType("character varying(20)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("OrganizationId");
+
+                    b.HasIndex("OrganizationId", "ProfileKey", "Version")
+                        .IsUnique();
+
+                    NpgsqlIndexBuilderExtensions.AreNullsDistinct(b.HasIndex("OrganizationId", "ProfileKey", "Version"), false);
+
+                    b.ToTable("agent_profiles", "orgboard");
+                });
+
             modelBuilder.Entity("TeamUp.Modules.OrgBoard.Domain.Division", b =>
                 {
                     b.Property<Guid>("Id")