diff --git a/docs/architecture.mmd b/docs/architecture.mmd
index 50c9d61a..072e8bb2 100644
--- a/docs/architecture.mmd
+++ b/docs/architecture.mmd
@@ -1,14 +1,14 @@
 sequenceDiagram
     autonumber
     participant Pytest as Pytest runner
-    participant ProcFactory as postgresql_proc_factory
-    participant PgServer as PostgreSQL process
+    participant BaseProc as base_proc fixture (postgresql_proc_factory)
+    participant PgServer as PostgreSQL server
     participant TemplateDB as Template DB (seeded)
     participant TestDB as Per-test DB (clone)
 
-    Pytest->>ProcFactory: request postgresql_proc with load=[load_database]
-    ProcFactory->>PgServer: start server
-    ProcFactory->>TemplateDB: invoke load_database (create metadata, seed data)
+    Pytest->>BaseProc: request base_proc with load=[load_database]
+    BaseProc->>PgServer: start server
+    BaseProc->>TemplateDB: invoke load_database (create metadata, seed data)
     Note right of TemplateDB: Template is created and seeded once per full run
     loop per test
         Pytest->>PgServer: request clone of TemplateDB
diff --git a/docs/architecture_chaining.mmd b/docs/architecture_chaining.mmd
index a914d13f..6aafc28d 100644
--- a/docs/architecture_chaining.mmd
+++ b/docs/architecture_chaining.mmd
@@ -1,22 +1,25 @@
 sequenceDiagram
-        participant Test as Test
-        participant ProcF as base_proc Fixture
-        participant NoProc1 as seeded_noproc Fixture
-        participant NoProc2 as more_seeded_noproc Fixture
-        participant DB as PostgreSQL DB
+    participant Pytest as Pytest runner
+    participant BaseProc as base_proc fixture (postgresql_proc_factory)
+    participant NoProc1 as seeded_noproc fixture
+    participant NoProc2 as more_seeded_noproc fixture
+    participant PgServer as PostgreSQL server
+    participant TemplateDB as Template DB (seeded)
+    participant LayeredDB as Layered DB (seeded)
 
-        Test->>ProcF: request base_proc
-        ProcF->>DB: init database & run load_schema
-        ProcF-->>Test: return PostgreSQLExecutor
+    Pytest->>BaseProc: request base_proc
+    BaseProc->>PgServer: start server
+    BaseProc->>TemplateDB: init database & run load_schema
+    BaseProc-->>Pytest: return PostgreSQLExecutor
 
-        Test->>NoProc1: request seeded_noproc (depends_on=base_proc)
-        NoProc1->>ProcF: read connection/template info
-        NoProc1->>DB: create layered DB / run load_data
-        NoProc1-->>Test: return NoopExecutor
+    Pytest->>NoProc1: request seeded_noproc (depends_on=base_proc)
+    NoProc1->>BaseProc: read connection/template info
+    NoProc1->>LayeredDB: create layered DB / run load_data
+    NoProc1-->>Pytest: return NoopExecutor
 
-        Test->>NoProc2: request more_seeded_noproc (depends_on=seeded_noproc)
-        NoProc2->>NoProc1: read connection/template info
-        NoProc2->>DB: run load_more_data on layered DB
-        NoProc2-->>Test: return NoopExecutor
+    Pytest->>NoProc2: request more_seeded_noproc (depends_on=seeded_noproc)
+    NoProc2->>NoProc1: read connection/template info
+    NoProc2->>LayeredDB: run load_more_data on layered DB
+    NoProc2-->>Pytest: return NoopExecutor
 
-        Test->>Test: validate tables and data across layers
+    Pytest->>Pytest: validate tables and data across layers
diff --git a/docs/images/architecture.svg b/docs/images/architecture.svg
index b7f7b2e6..e3388b3a 100644
--- a/docs/images/architecture.svg
+++ b/docs/images/architecture.svg
@@ -1 +1 @@
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id="sequencenumber" refX="15" refY="15" markerWidth="60" markerHeight="40" orient="auto"><circle cx="15" cy="15" r="6"/></marker></defs><g><rect x="917" y="211" fill="#EDF2AE" stroke="#666" width="329" height="37" class="note"/><text x="1082" y="216" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="noteText" dy="1em" style="font-size: 16px; font-weight: 400;"><tspan x="1082">Template is created and seeded once per full run</tspan></text></g><g><line x1="64" y1="258" x2="1282" y2="258" class="loopLine"/><line x1="1282" y1="258" x2="1282" y2="529" class="loopLine"/><line x1="64" y1="529" x2="1282" y2="529" class="loopLine"/><line x1="64" y1="258" x2="64" y2="529" class="loopLine"/><polygon points="64,258 114,258 114,271 105.6,278 64,278" class="labelBox"/><text x="89" y="271" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="labelText" style="font-size: 16px; font-weight: 400;">loop</text><text x="698" y="276" text-anchor="middle" class="loopText" style="font-size: 16px; font-weight: 400;"><tspan x="698">[per test]</tspan></text></g><text x="272" y="80" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">request postgresql_proc with load=[load_database]</text><line x1="76" y1="111" x2="468" y2="111" class="messageLine0" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="fill: none;"/><line x1="76" y1="111" x2="76" y2="111" stroke-width="0" marker-start="url(#sequencenumber)"/><text x="76" y="115" font-family="sans-serif" font-size="12px" text-anchor="middle" class="sequenceNumber">1</text><text x="577" y="126" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">start server</text><line x1="473" y1="155" x2="681" y2="155" class="messageLine0" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="fill: none;"/><line x1="473" y1="155" x2="473" y2="155" stroke-width="0" marker-start="url(#sequencenumber)"/><text x="473" y="159" font-family="sans-serif" font-size="12px" text-anchor="middle" class="sequenceNumber">2</text><text x="681" y="170" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">invoke load_database (create metadata, seed data)</text><line x1="473" y1="201" x2="888" y2="201" class="messageLine0" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="fill: none;"/><line x1="473" y1="201" x2="473" y2="201" stroke-width="0" marker-start="url(#sequencenumber)"/><text x="473" y="205" font-family="sans-serif" font-size="12px" text-anchor="middle" class="sequenceNumber">3</text><text x="379" y="308" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">request clone of TemplateDB</text><line x1="76" y1="339" x2="681" y2="339" class="messageLine0" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="fill: none;"/><line x1="76" y1="339" x2="76" y2="339" stroke-width="0" marker-start="url(#sequencenumber)"/><text x="76" y="343" font-family="sans-serif" font-size="12px" text-anchor="middle" class="sequenceNumber">4</text><text x="977" y="354" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">create cloned database for test</text><line x1="686" y1="383" x2="1267" y2="383" class="messageLine0" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="fill: none;"/><line x1="686" y1="383" x2="686" y2="383" stroke-width="0" marker-start="url(#sequencenumber)"/><text x="686" y="387" font-family="sans-serif" font-size="12px" text-anchor="middle" class="sequenceNumber">5</text><text x="672" y="398" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">run test using cloned DB</text><line x1="76" y1="429" x2="1267" y2="429" class="messageLine0" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="fill: none;"/><line x1="76" y1="429" x2="76" y2="429" stroke-width="0" marker-start="url(#sequencenumber)"/><text x="76" y="433" font-family="sans-serif" font-size="12px" text-anchor="middle" class="sequenceNumber">6</text><text x="672" y="444" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">teardown: commit transaction</text><line x1="76" y1="473" x2="1267" y2="473" class="messageLine0" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="fill: none;"/><line x1="76" y1="473" x2="76" y2="473" stroke-width="0" marker-start="url(#sequencenumber)"/><text x="76" y="477" 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id="sequencenumber" refX="15" refY="15" markerWidth="60" markerHeight="40" orient="auto"><circle cx="15" cy="15" r="6"/></marker></defs><g><rect x="942" y="211" fill="#EDF2AE" stroke="#666" width="329" height="37" class="note"/><text x="1107" y="216" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="noteText" dy="1em" style="font-size: 16px; font-weight: 400;"><tspan x="1107">Template is created and seeded once per full run</tspan></text></g><g><line x1="64" y1="258" x2="1307" y2="258" class="loopLine"/><line x1="1307" y1="258" x2="1307" y2="529" class="loopLine"/><line x1="64" y1="529" x2="1307" y2="529" class="loopLine"/><line x1="64" y1="258" x2="64" y2="529" class="loopLine"/><polygon points="64,258 114,258 114,271 105.6,278 64,278" class="labelBox"/><text x="89" y="271" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="labelText" style="font-size: 16px; font-weight: 400;">loop</text><text x="710.5" y="276" text-anchor="middle" class="loopText" style="font-size: 16px; font-weight: 400;"><tspan x="710.5">[per test]</tspan></text></g><text x="253" y="80" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">request base_proc with load=[load_database]</text><line x1="76" y1="111" x2="430" y2="111" class="messageLine0" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="fill: none;"/><line x1="76" y1="111" x2="76" y2="111" stroke-width="0" marker-start="url(#sequencenumber)"/><text x="76" y="115" font-family="sans-serif" font-size="12px" text-anchor="middle" class="sequenceNumber">1</text><text x="571" y="126" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">start server</text><line x1="435" y1="155" x2="706" y2="155" class="messageLine0" stroke-width="2" stroke="none" 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font-weight: 400;">request clone of TemplateDB</text><line x1="76" y1="339" x2="706" y2="339" class="messageLine0" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="fill: none;"/><line x1="76" y1="339" x2="76" y2="339" stroke-width="0" marker-start="url(#sequencenumber)"/><text x="76" y="343" font-family="sans-serif" font-size="12px" text-anchor="middle" class="sequenceNumber">4</text><text x="1002" y="354" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">create cloned database for test</text><line x1="711" y1="383" x2="1292" y2="383" class="messageLine0" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="fill: none;"/><line x1="711" y1="383" x2="711" y2="383" stroke-width="0" marker-start="url(#sequencenumber)"/><text x="711" y="387" font-family="sans-serif" font-size="12px" text-anchor="middle" class="sequenceNumber">5</text><text x="684" y="398" 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id="sequencenumber" refX="15" refY="15" markerWidth="60" markerHeight="40" orient="auto"><circle cx="15" cy="15" r="6"/></marker></defs><text x="212" y="80" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">request base_proc</text><line x1="76" y1="111" x2="347" y2="111" class="messageLine0" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="fill: none;"/><text x="735" y="126" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">start server</text><line x1="352" y1="155" x2="1117" y2="155" class="messageLine0" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="fill: none;"/><text x="838" y="170" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">init database &amp; run load_schema</text><line x1="352" y1="201" x2="1324" y2="201" class="messageLine0" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="fill: none;"/><text x="215" y="216" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">return PostgreSQLExecutor</text><line x1="350" y1="247" x2="79" y2="247" class="messageLine1" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="stroke-dasharray: 3, 3; fill: none;"/><text x="353" y="262" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">request seeded_noproc (depends_on=base_proc)</text><line x1="76" y1="293" x2="629.5" y2="293" class="messageLine0" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="fill: none;"/><text x="494" y="308" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">read connection/template info</text><line x1="632.5" y1="339" x2="355" y2="339" class="messageLine0" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="fill: none;"/><text x="1085" y="354" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">create layered DB / run load_data</text><line x1="634.5" y1="385" x2="1534.5" y2="385" class="messageLine0" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="fill: none;"/><text x="356" y="400" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">return NoopExecutor</text><line x1="632.5" y1="431" x2="79" y2="431" class="messageLine1" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="stroke-dasharray: 3, 3; fill: none;"/><text x="483" y="446" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">request more_seeded_noproc (depends_on=seeded_noproc)</text><line x1="76" y1="477" x2="890.5" y2="477" class="messageLine0" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="fill: none;"/><text x="766" y="492" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">read connection/template info</text><line x1="893.5" y1="523" x2="637.5" y2="523" class="messageLine0" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="fill: none;"/><text x="1215" y="538" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">run load_more_data on layered DB</text><line x1="895.5" y1="569" x2="1534.5" y2="569" class="messageLine0" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="fill: none;"/><text x="486" y="584" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">return NoopExecutor</text><line x1="893.5" y1="615" x2="79" y2="615" class="messageLine1" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="stroke-dasharray: 3, 3; fill: none;"/><text x="76" y="630" text-anchor="middle" dominant-baseline="middle" alignment-baseline="middle" class="messageText" dy="1em" style="font-size: 16px; font-weight: 400;">validate tables and data across layers</text><path d="M 76,661 C 136,651 136,691 76,681" class="messageLine0" stroke-width="2" stroke="none" marker-end="url(#arrowhead)" style="fill: none;"/></svg>
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+Make sure diagrams are using unified terminology.